ULANZINew Model Camera Cooling Fan Black, 72mm, Mini Intelligent Cooling Fan, Real-time Monitoring, Type-C Charging, Compatible with Sony Canon FUJIFILM Nikon Cameras

I bought three of these for my cameras for long video recording 4K 4.2.2. No more overheating, I can easily record for two hours without stopping. They are very quiet. I like that they have a little LED screen so you can see the battery life and what fan speed it's set to, (0,1 or 2). The battery last about 3 1/2 hours, but I normally leave it plugged in with a USB C connector so the battery never runs out. The design is great and just looks like part of the camera, they never fall off with the quick spring bracket, it takes less than 5 seconds to securely mount them. I have recommended these to all my video friends. Oh, and did I mention that it also tells you the temperature of the back of the camera? Brilliant.

does have a positive effect on temps. wont remove all the issues if you choose really difficult settings like simult recording on a high quality setting but will prolong the record duration. Best to stay 4k at 8 bit 4:2:0 or 10 bit 4:2:2 on the lower bit rate on the a7iv

I recently bought this Ulanzi Mini Fan for my Sony A6700 camera, and it works brilliantly. It attaches easily, and this newer version doesn't require suction cups. My A6700 used to overheat quickly when shooting at 100fps, but this fan prevents that issue entirely. It has two settings, which helps reduce noise if needed. The only downside is the battery life—it doesn't last very long and needs frequent recharging. Thankfully, you can recharge it while it's attached using a power bank. Overall, a great accessory for preventing overheating!

Works so well for my Sony ZV-E1, keeps the camera going so much longer even when filming in 4K 60FPS, a must have for content creators!

A real asset for cameras with a flip-out screen. This version is spring-loaded, providing a secure attachment in the LCD screen bay with the screen flipped out. Much better than the old rubber-sucker model that tended to fall off. I have this mounted in a Sony A6700 and A7S III. Not really useful in cameras where the screen merely tilts. As other have said, battery life isn't great for a long continuous video shoot, but fine as part of a rig with some kind of external battery like a V-mount, Sony NPF or power bank.

Excellent product. Meant that I could livestream for over 90 minutes with the Sony ZV E10 II

First it attach to your camera in a very cleaver way, without the need of sticker or anything.I use a Sony A7IV and when filming a video, it stops after 40mim due to heating.With this fan attached on. It last an extra 30min.The only con is the battery of the fan doesn’t last long. Which is expected in it small factor.But I would gladly recommend it.

Stops the camera ever heating works great