If you are a “mobile” worker who always runs errands every day, and want a portable necklace fan that comes in handy and fits well in any situation, then our pick HANDFAN Necklace Fan with 180° Rotating Free Adjustment is the optimal choice for you.
It has three usage modes. Aside from hanging around your neck, you can unfold its head and pedestal to use as a handheld fan, or prop it up on a desk to use as a desk fan. Plus, it offers three speed settings and produces strong airflow whilst keeping quiet. Most of all, its battery life can last a whole day.
Who is this for
Portable fans are one of the most ingenious inventions. They can help you cool down the surrounding temperature in any situations. With small size, they are easy to tuck in your bags, purses or even pockets. On those scorching and muggy summer days, the best way to beat the heat is to use a portable fan, especially when you are working outside and ice-creams or cold drinks can’t keep you cool.
Portable fans are not limited by time or usage scenarios. When staying in a crowded classroom or gym for a long time, obviously you will feel stuffy. At this moment, a portable fan can provide you with revitalizing relief from the heat. When waiting in line, you might feel annoying and unbearable especially in somewhere poorly ventilated. In this awful situation, a portable fan will keep you cool quickly. When you are in a library — one of the quietest places in the world, the air conditioner may be not strong enough that fail to cool you down, then a portable fan will play a big role. And, as it’s small and doesn’t make too much noise, it’s barely noticeable and won’t bother other people in general.
A fan, also called an air circulator, works by driving the fan blades to circulate air throughout the whole room to cool off, ventilate and even dry a certain area. In various situations, fans can offer immediately cooling effect, which is no match for that of air conditioning system, certainly. Air conditioners actually utilize refrigeration to chill indoor air, while the fans work with electric motor to move air. But as we all know, the operating cost of air conditioning system is way much higher than the fans’, and it’s not necessarily available in all situations. In comparison, fans are indeed the more economical and optimal replacement to air conditioners.
There are many kinds of fan on the market, including tower fan, floor fan, ceiling fan, misting fan and portable fan. However, aside from portable fan, other types of fan are bulky that will take up much space, and they are not convenient to move around from place to place. I believe that you’re not willing to take a giant fan on the go. Me neither.
Necklace fan is a kind of portable fan, while it is used in a way that greatly differs from the common handheld fans. As its name entails, it can completely free up your hands. Generally, you just need to hang it around your neck and turn on the power button, then you can enjoy effectively cooling comfort. So, it is such a joy to use necklace fans during outdoor activities on those baking hot days. When cycling, you may be stuck in an awkward position while trying to free your hands to hold a portable fan (unless you can confidently ride with one hand, but that is very dangerous). In that situation, you will appreciate the benefits of a necklace fan. When you are playing in a theme park, a necklace fan can bring you more convenience so that you can hold an ice-cream in one hand and a hot dog in another hand. Or, when you are traveling and enjoying the gorgeous scenery, with a necklace fan, you can free your hands to hold your phone or a camera to take pictures of those beautiful sceneries.
Beyond that, there are still various kinds of portable fans on the market. They feature different shapes and design that may lead to different cooling effect. If you want to know more, you can check out our guide Best Affordable Portable Fans, in which we give you a detailed introduction of these portable fans.
How we picked and tested
To start, we searched products on major e-commerce platforms, like Taobao, Alibaba, Jingdong, Amazon, Aliexpress, and Souq.com. It appeared that there are not many necklace fans on the market so far, and many products are the same in design, which makes it easy to select products. So this time we didn’t need to do a lot of sifting as usual. After a round of knockout, we picked out 7 products with different designs from various manufacturers. And we bought them in to do hands-on testing based on the following criteria.
We measured each portable fan’s airflow in cubic feet per minute (CFM). CFM tells that the amount of air that a fan can circulate in a minute when it runs. This value depends on many factors, including wind speed, distance, head diameter, etc. When we referred to test methods online, we found that to calculate the CFM of ceiling fans or large fans, they will consider the room’s cubic footage, the desired frequency of air change, etc. (Click here to view). Apparently, this measurement is not suitable for portable fans, because portable fans are just for personal use, and they can’t move a huge range of air. Therefore, we customized a set of measurements to calculate the airflow of portable fans.
Considering that necklace fans generally come with adjustable straps or heads, and different people have different fan-using habits, we conducted testing in an intuitive way to fairly measure and compare each fan’s airflow. Firstly we placed an anemometer in front of the center of the fan’s head at 5cm away to measure its wind speed (ft/min) (If we placed it very close to the center of the fan’s head, the center part of the fan’s grille will block some airflow. If we placed it too far away, the actual airflow will be affected by other factors, such as air dispersion and real-world airflow. Thus, we set the testing distance at 5cm so that we can obtain the most accurate value.). Then, we multiply the wind speed (ft/min) by the area of the fan’s head (ft²) to calculate the airflow (CFM).
Testing wind speed
One thing to mention, the area of the air outlet has a lot to do with a fan’s airflow. During testing, we turned on two products which come with the same wind speed but have different air outlet area. Blowing at the same distance, the fan with small air outlet area measured relatively low CFM. When I used these two fans to blow on both sides of my face at the same time, I felt that the fan with large air outlet area apparently blew more wind.
In fact, a fan’s CFM will be affected by its grill, as the grill theoretically will block out some wind. On YouTube, we found a video about measuring the CFM of air conditioners. It mentions that K factor (the area of the grill where air is not going through) will affect the overall wind speed of an air conditioner. However, we didn’t take the K factor into account when calculating CFM, because not only will it lead to more complicated calculation, but also make this article more difficult to understand. Moreover, in real-world using, the K factor is negligible, since it doesn’t do much to the portable fan and basically every portable fan has an almost-the-same grill.
BTW, the data we obtained only help us to pick out the best necklace fans. They do not necessarily represent the real-world airflow. So, it’s not appropriate to use these figures to make comparisons with other types of fan.
For most consumers, noise level is one of the biggest concerns. Even though you usually use a necklace fan during outdoor activities, if the fan keeps making buzzing whirr around your ears, you would still feel annoying. In the noise test, I found a product emitted considerably loud noise, as if two jet engines were working beside my ears. Therefore, in order to find out the quietest necklace fan, we tested in a quiet meeting room, used a decibel meter placing beside the fan and recorded the decibel of each fan at each speed setting, and made comparisons.
As we mentioned above, different people may have different fan-using habits. So before testing, we needed to set a proper distance that conforms to most people’s habits when using necklace fans. At last, we decided to place the decibel meter at 15cm away beside the fan. You may ask why we placed it beside the fan instead of in front of it. Well, if we place the decibel meter in front of the fan, the wind noise would be together detected, which would lead to higher amount of decibel. And that result can’t represent the real-world noise we hear.
Testing decibel level
If a necklace fan runs for a short time and shuts down due to the dead battery, that’s depressing. Although most necklace fans can charge via a power bank to prolong the battery life, it’s quite inconvenient. Picture this, you use a long cable to connect your power bank to the fan hanging around your neck or on your chest, isn’t it weird? What’s worse, the charging cable will hinder you, too. So, the battery life matters a lot for a necklace fan. Aside from comparing each fan’s battery capacity, we also checked how long they can last (from a full charge to shutdown) on different speed levels.
Testing battery life
If a necklace fan is too heavy, hanging it around your neck will add great burden and even injure your neck over time. We used an electronic scale to weigh and compare each fan. We also put them on to fact-check the real-world wearing feeling.
This factor goes hand in hand with the portability of a necklace fan. So, if the products have similar performance in many aspects, we will give priority to those small-size models. We compare each fan’s size to check whether they can tuck in our bags easily. Among all test models, there’s a product with a special shape that takes much space and is quite inconvenient to carry.
Long-term real-world use
Our Pick: HANDFAN Necklace Fan
If you are a “mobile” worker who always runs errands every day, and want a portable necklace fan that comes in handy and fits well in any situation, then our pick HANDFAN Necklace Fan with 180° Rotating Free Adjustment is the optimal choice for you. It is the only necklace fan we recommended, since it’s not only powerful and quiet but also versatile. You can convert it into a necklace fan, handheld fan or desktop fan as needed. (It’s so sick!)
Small yet powerful
The HANDFAN’s airflow is one of the strongest of all tested products. It offers three speed settings. In our real-world tests, it generates a slight breeze on its low setting. Measuring a CMF reading of 12.6, it is perfect for sleeping. On the second setting, with a CMF reading of 20.7, it delivers gentle natural gust that can bring you delightful relief from work anxiety. On its high setting, it provides strong wind, registering a CFM reading of 27.3. Though its head area is a bit small, which causes its airflow to be inferior to the regular handheld fans, it can still help you keep the sweat at bay when you are playing in a theme park. Compared with most handheld fans we recommended, the HANDFAN’s head is, indeed, way smaller due to the structure differences, so certainly its airflow is slightly weaker. However, thanks to its fast-enough wind speed, it can cool you down quickly in real-world use.
Testing wind speed
Fairly quiet when in use
Surprisingly, this HANDFAN fan is the quietest of all necklace fans we tested. On its low setting, it is barely audible at 43.5dB in a quiet office. Even you use it in a library, it won’t bother others. On its second setting, it measures 50.2dB. Though a bit obvious, the sound of typing on a keyboard and moving chairs will cover it in the office. On its high setting, registering a mere 54dB, its noise is literally negligible, compared with the outdoor ambient noise. So, you can totally neglect it when doing activities outside.
Testing decibel level
The battery life meets your daylong use
The HANDFAN has a 1500mAh battery. Though not that large, it can last 11 hours and 15 minutes on its low setting, more than enough to meet your daylong use. On its second setting, it can continuously work for 5 hours and 38 minutes, and 3 hours and 22 minutes on its high setting. It does decline a lot, but it’s still perfect for a day out or short trips. Besides, you can use your power bank to prolong its battery life. Thus, you never need to worry that it would die in the outdoors.
Multifunction: nacklace mode, handheld mode or desktop mode
Among all test models, the HANDFAN is the only one that is crafted to incorporate three usage modes, allowing you to freely convert into a necklace fan, handheld fan or desk fan. And this fan is mainly divided into two parts: the head and the pedestal. Between them, there’s a hinge joint that enables 180° rotation. When you hang the fan around your neck, you can adjust the angle through the rotation joint. That’s something not every necklace fan can do.
Plus, if you totally unfold its head and pedestal, you can use it as a handheld fan. In addition, it comes with an anti-slip silicone pad on the bottom of the pedestal. When acting as a desktop fan, it can stand steadily on a desk, and even on a slightly tilted plane. You can also angle its head via the rotation joint, which is typically one of the must-have features for a desktop fan.
A boon for women
This fan is the most portable necklace fan we met. Measuring only 78 x 78 x 55 mm (3.1 x 3.1 x 2.2 in.) and weighing 155.6g (5.5oz), it’s compact enough to tuck in your bag easily without taking too much space. Interestingly, open the silicone pad at the bottom of the fan, and you will find a mirror hiding in it, which is a thoughtful design for women. That is to say, you don’t need to carry an extra mirror in your bag anymore.
Flaws but not dealbreakers
The only catch of this fan is that its strap is unadjustable, but that’s not a dealbreaker. You can tie some knots to shorten it. Moreover, its strap is detachable, meaning that you can take it off easily to replace any strap you like.
Gongtian Necklace Fan: Its structure is quite different from the common portable fans. It sucks air from the front and then blows it up from the outlet on the top of the fan. I do appreciate its airflow. However, when I wore it on my chest, it turned out to only blow on the right side of my face, while the left side of my face couldn’t feel any wind. I deemed that it’s because the left side of the fan’s grill is blocked out, where the air fails to get through. Worst of all, it is notably noisy when running, particularly on its high setting, measuring a noise level at up to 71.2dB, which can be comparable to the ambient noise level on a noisy street.
Mingjun Necklace Fan: It’s similar to the Gongtian in structure. At speed 1 and speed 2, it’s powerful than that of the Gongtian, while at speed 3 it’s way weaker. We bought two identical products and tested them, one of which produced slightly lower noise than the Gongtian; however, the other emitted harsh noise, resembling the tweet of cicadas that made me feel annoying. It fully proves that the QC of these fans’ manufacturer is not rigorous.
WK Necklace Fan: This fan runs in a way similar to the Gongtian. Both suck the air from the front and then blow it up from the top. But it has a unique shape, which is quite different from the Gongtian. I’m fond of its speed-control dial on the side, unlike other products which just has fixed speed options. Plus, its lanyard is adjustable. Unfortunately, its air outlet area is fairly small that causes its airflow to be inferior. In our tests, it measured a CFM reading of only 5.2-8.9. We adjust its wind speed to the same as our pick HANDFAN Necklace Fan and let my colleagues judge which fan was more powerful. As a result, they all agreed that the HANDFAN’s airflow was notably stronger. The main reason is that the HANDFAN registers a way higher CFM than the WK. So, even at the same speed level, the HANDFAN performed better.
Kynovation Necklace Fan: It is identical to the WK in appearance design, but it did a worse job of airflow than the WK. More fatally, even on the lower setting than the WK, it was still considerably louder than the WK, .
BLUEBERRY Necklace Fan: It comes with a unique design that is greatly different from the regular necklace fans. It has two heads, so initially we did believe its airflow would be much stronger than other products. But through testing, the result let us down. The size of its two heads is almost the same as our pick HANDFAN Necklace Fan, but due to the low rotational speed of its blades, the CFM of its one head is only 50% of the HANDFAN on the same speed setting. The CFM of its two heads in total is close to our pick’s, while it cost 2.5 times more than our pick. Worse still, because of its unique design, it’s extremely inconvenient to tote around and also hard to stash in bags.
Zhuoxin Necklace Fan: This fan looks the same as the BLUEBERRY, but it has quite different performance in every aspect. Its two heads are bigger than the BLUEBERRY’s, and the blades’ rotational speed is way faster, so its CFM is more than twice of the BLUEBERRY. Compared with our pick HANDFAN, the CFM of its one head is still higher. However, a dealbreaker is that it produces exceptionally loud noise. Particularly when I hung it around my neck and both heads were very close to my ears, it seemed as if two jet engines were running beside me. Yeah, it’s also inconvenient to carry around.