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❄️ Stay cool, play cooler — the ultimate power-up for your device!
The Black Shark Magnetic Cell Phone Cooler 4Pro is a cutting-edge portable cooling fan delivering a powerful 27W semiconductor cooling system that drops device temperatures by up to 40°C within 30 seconds. Featuring a dual magnetic and clip-on grip, it offers broad compatibility across iPhones, Androids, tablets, and more. Smart temperature controls with app integration ensure safe, efficient cooling while ultra-quiet airflow keeps your gaming uninterrupted. Perfect for professionals and gamers seeking peak device performance and style on the go.
















| ASIN | B0D17VTM38 |
| Best Sellers Rank | #66 in USB Fans |
| Brand | Black Shark |
| Brand Name | Black Shark |
| Compatible Devices | Laptop, Smartphone |
| Cooling Method | Air |
| Customer Reviews | 4.1 out of 5 stars 538 Reviews |
| Included Components | cooler fan |
| Item Dimensions L x W x H | 3.9"L x 7.13"W x 1.71"H |
| Item Type Name | Black Shark Magnetic Cell Phone Cooler 4PRO |
| Item Weight | 88 Grams |
| Manufacturer | Black Shark |
| Material Type | Plastic |
| Maximum Rotational Speed | 7200 RPM |
| Model | 4Pro Black |
| Noise Level | 35 Decibels |
| Number of Items | 1 |
| Part Number | BLACK-BR42 |
| Power Connector Type | USB Type-C |
| Product Dimensions | 3.9"L x 7.13"W x 1.71"H |
| Unit Count | 1.0 Count |
| Voltage | 5 Volts |
| Warranty Description | 1 Year |
| Wattage | 27 watts |
A**R
Solid investment
I bought this phone cooler specifically for gaming outdoors in the summer, and it has exceeded my expectations. Before using it, my phone would get hot very quickly, causing lag, screen dimming, and battery drain. With this cooler attached, my phone stays much cooler even when gaming in direct heat for extended periods. The cooling is noticeable within minutes, and it helps maintain smooth performance without the throttling that usually happens when temperatures rise. It's easy to use, lightweight, and doesn't get in the way while playing. For anyone who enjoys mobile gaming outside, especially during hot weather, this cooler is a game changer. Definitely one of the best accessories I've purchased for my phone.
G**H
Excellent Product
This item gets and keeps my iPhone cool and running smoothly! I use car play with Sirius and Waze running. My iPhone never overheats or even gets warm! Highly recommend if your android or iPhone runs hot.
Z**.
Perfect Cooler, Do Not Use App.
Excellent cooler, keeps my Samsung Galaxy S25 Ultra from burning up during gaming at max graphics settings running things like World of Tanks, Call of Duty, Fortnite and Runescape/OSRS. DO NOT GET FOR WIRELESS CONTROL. Get for basic functionality and use the button on it for speed and light control. You're not gonna see the lights on it while using it anyway since it's behind your phone. WHY: App not supported on Google Play/App Store. Chinese Spyware app that wants you to download it from an untrusted source via QR Code included with the cooler. Once installed it requires Bluetooth and Location to be constantly active to...... control my fan speed and RGB settings...? Riiiiiiiiiiiiight. Okay China.
B**Y
Necessity for Pokemon Go players in sunny climates!
I hesitated to spend this much money just to cool down my iPhone while I play Pokemon Go - it seemed like a silly extravagance until I prepared for my first in-person event, Go Fest Chicago 2026. So I went ahead and got this, and I’ll never play in the sun without it again! No more squinting at a black screen and wondering if there’s anything there to catch or not. No more phone so hot I can barely hold it. This thing not only keeps my phone super cool, it looks super cool, and maybe that makes me super cool too! I saw that Fleece King has this one too, so it must be awesome. Seriously, I love it and wish I hadn’t waited to buy this. Just go ahead and get another power bank so you can keep your phone charged and run this cooler. And btw, I could barely hear it running at the highest speed when playing outside.
L**U
Works ok
Device is ok right out of the pakage . It'll cool your phone down a bit with the factory settings, but in no way it'll be ice cold. You have to download an app in their site which is hard to navigate because it's in chinese language, even if you translate it it doesn't show you where exactly to DL it. If I have known i wouldn't have bought it.
L**A
WASTE OF TIME AND MONEY
If i could leave 0 stars i would… i ordered this product to keep my phone from overheating while outdoors. It arrived with everything brand new. I followed the instructions provided and charged my device. I then attached the clips and mounted it onto the back of my phone and powered on. It made a noise like the fan was running you could physically see it wasn’t spinning or producing any type of air/cooling effect. I requested a replacement and received it fairly quickly.. The only thing was that the box must have been a return from someone else because the box wasn’t wrapped in plastic like the original purchase was. It also only contained the device itself, with no accessories like the clips and charger. Both have been shipped back to Amazon for a refund, although only one device is showing as returned while the other just has details for showing the return label, even though the UPS employee scanned both QR Codes. I hope i have no issues in getting my refund but i can already foresee an issue coming.. Guess we’ll see..
J**.
10/10
I’ve only had it a day and it’ll work fit on your phone with a bulky case those I’m pretty sure it won’t work nearly ass good with the case off but I bought it for my rog ally because I saw someone say it could be used but of course they fail to mention how they got it to work you basically have to by a magnetic sticker and place it over the vent on the back of the whatever you’re using it on if it doesn’t have mag safe so far I’ve held it on with a hairband and good placement kept my rog in the 60s to high 60s on turbo mode running a decent game at max graphics getting 120 frames and never went past 70 and if it did went right back down I’m scared of the condensation on the back getting into the rog while you’re playing but it hasn’t happened yet but I’ve only had it for a day but it does get cold and fast idk about the fan being loud i literally can’t hear it unless I put my ear to it but I have a lot of background sounds but even when my room was quiet I only heard my game and didn’t even hear the fans from the rog blowing because it was already cooled . Just remember you need a magnetic sticker I found a thermal one that helps with items just like this hopefully it does even better. Only downside is this thing is a powerhouse definitely need a good portable battery if you play on the move and also if you have a multi usb charger make sure it’s a good one my 240 watt charger was overheating running this and all my stuff connected to my ally I have to get a better one now but that cooler came in clutch put right on my usb hub and it was cooled again. Updated: the photo is running borderlands as high as you can on the rog while it’s still playable and I was at high 40’s to 50’s and the heavy parts and 60s almost running around without the cooler my temp was hitting 80 easily and showing no signs of ever going down with this sometimes it’s spiked to 84 for a few seconds but would go to down to 78 like normal I still have yet to find a good spot and good thermal sticker the one I had is too big and completely covered the vent but with the cooler on it’s doesn’t matter also can’t use the sticker with some cases you’d have to put it on the device itself
J**B
Caveat emptor!!!
While this little cooler is incredible, it ships with max fan and some really irritating lights. DO NOT USE THEIR NON-PLAY STORE ON-LINE ONLY APP to make any changes! They will require you to give them (China) full access to your contacts and phone records to download using their on-line app only! I recommend you use a burner phone with NO personal information and connect via a public wifi. Be prepared to get the program in Chinese but this is the only way I discovered to avoid a massive data breech. Use AI to guide you, if needed. Once you get into the app, recommend you set the fan speed to "Smart" and turn off the irritating lights. It works great once you avoid their dangerous direct app using your fully populated personal phone by being essentially anonymous.
L**U
Works well!!
Works like a charm :) especially when I want to keep playing but need to charge simultaneously. Don’t regret the purchase at all.
M**O
OTTIMO PRODOTTO
Serviva a mia moglie per raffreddare telefono durante streaming. Qualità costruttiva eccellente. Funziona perfettamente. La superficie telefono al tatto sembra uscito da freezer!!!
C**N
Düşünmeden alabilirsiniz.
Ürün türkiyeye sorunsuz geldi. Aras kaargo ile geldiği için sorun yaşadım mardin yerine orduya giden kargom 1 hafta geç teslim edildi ama ürün sorunsuz ve mükemmel kalitede funcooler 4 pro ve funcooler 4 modellerini de kullanıyorum kalite hissiyatı onlardan çok daha önde.
E**H
Erstaunlich gute Leistung
Die angegebenen 27 Watt wurden tatsächlich erreicht, somit stimmt der Wert. Die gummierte Oberfläche ist hervorragend und sorgt für ein kratzfreies Backcover und eine starke Kühlleistung durch die Schließung von Luftzwischenräumen. Die Clips sind auch gut, aber leider quietschen diese etwas, was jedoch echt nicht stört. Die App-Anbindung ist super, auch wenn ich mir ein deutsches Menü wünschen würde (aktuell die Hälfte Deutsch, die Hälfte Englisch). Das mitgelieferte Kabel ist hochwertig, lang und schnell. Ich würde mir einen Kühlmodus mit Intervallkühlung wünschen, gerade um im Standby oder leichter Nutzung das Handy nicht zu unterkühlen. Das Gerät ist alles in allem sehr empfehlenswert und bei Rabatten auch sehr günstig, wie bei mir für ~30 €.
P**S
B+B+b---Bueno+Bonito y a precio razonable no barato.
Hola 👋 a 2/4/25 sin probar nada más la impresión es buena,se siente de muy buena calidad.6/4/25 Pasados uno días tengo sensaciones encontradas...por un lado el funcionamiento en general tanto el enfriado como el magnético y los led,es perfecto.Mantiene en modo mínimo o inteligente mi dispositivo Android 13 que funciona sin batería a una temperatura de procesador realmente baja cuando esta en reposo unos 14° y la temperatura del enfriador es de 0°a 5°(no probado al máximo) realmente mucho mejor que otro de la competencia bastante más caro.Con test de antutu de 45min en modo auto el procesador marcó unos picos máximos de 60°- 65° unos instantes y lo normal en la prueba es 35° de forma constante.La temperaturadel enfriador oscila de los °8 asta un máximo de 12°.Se aprecia el modo inteligente haciendo su trabajo oscilando la potencia desde 8.2w asta 22w(usa sensor propio).En modo máximo el enfriado es exagerado bajando rápidamente asta los -15° y congelandose.Lo coloque en una Note8 apagada como conejillo de indias durante 15 minutos y es capaz de efriarla por completo asta el punto de condensarla por todo y el enfriador se mantiene sin problema a -10°."ESTO LO VEO PELIGROSO CUIDADO CON OLVIDAR EL MODO MÁXIMO Y EL TELÉFONO SIN USAR SE ENFRÍA DEMASIADO" Ahora veamos lo malo.....1 la aplicación no esta en playstore por lo tanto pide permisos para instalar de terceros y eso crea desconfianza. 2 Se incluye una tarjeta con QR de la web para descargar otra app de chat para instrucciones(eso creo leer en chino) la web es detectada como no segura y el apk como archivo malicioso por varios dispositivos.Una vez instalada lo primero que pide es correo o número de teléfono...jajaj no pase esa fase... 3 No incluye pegatina magnética,se vende a parte.... donde .... a saber...en Amazon no y en la tienda black shark global tampoco....pero si en cierto comercio chino.Solo como idea... si cambian el cartoncito del dichoso QR por una pegatina magnética contentarian a muchos por poco gasto. 4 Con los teléfonos Samsung galaxy s23 ultra 5g y galaxy note 8 se pega a la parte trasera pero da un fallo terrible con los S Pen,el la note8 despliega el menu Spen como al extraerlo y en el s23 sale un mensaje:"Su funda magnética esta interfirindo con las funciones gestuales de Spen y este se desconectara por seguridad".Por lo tanto no sirve para dispositivos con Spen. 5 Una vez instalada la app shark arsenal de la web de black shark cuyo QR es el del manual de instrucciones (solo chino/inglés) resulta ser una app buena que reconoce rápido al enfriador y puedes configurar casi de todo.Pero salta en todo momento un mensaje de actualización muy molesto,que si haces caso se actualiza a una versión con fallos y desconexines constantes teniendo que emparejar cada vez que se cierra o se sale de la aplicación.Ademas genera como 2 aplicaciónes instaladas al mismo tiempo.Deberían quitar ese molesto mensaje de actualización o arreglar la versión 5.0.2.Lo peor de la app es que no se ve completa en dispositivo de 8" sale cortada por abajo y no muestra las opciones de ajustes de led y temperaturadel enfriador (ambas versiones) El contacto con desarrollo de la app desde la misma app no tiene respuesta (cuidado con las tabletp pequeñas la app no se ve bien). 6 Anuncian una potencia de 27w y nuna los di medido,solo consigo medir un máximo de 25w y el funcionamiento normal cuando pasan unos minutos funcionamiento al máximo es de 20w-22w. En fin mi conclusión si sigue funcionando así para lo que yo lo quiero y el precio de Amazon oferta de primavera al que lo compré lo hacen un dispositivo de 5 estrellas con una app de 2 estrellas,que visto como son los de la competencia merece la bastante la pena.Con el botón se enciende y apaga manteniendo pulsado y seleciona los 3 modos de enfriado,por lo tanto la app no es imprescindible para enfriar.Si se quiere dar uso al led y ver temperatura del enfriador no podras en tablet pequeña.(Permite configurar led y modo de refrigeración instalando la app en otro teléfono y lo mantiene memorizado, ademas el modo auto se ajusta segun el sensor propio por lo tanto enfriará bien sin app ) A falta de más uso y a la espera de una actualización de app esta es mi reseña que actualizaré si algo sucede....espero ayudar y que os sirva para gastar bien el tiempo y sobre todo los €€€€€uros ..un saludo 👋 🖖
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