Customer Note: This CU01 cooler kit with a battery, a cooler, and a charging cable. The cooling fan does not have a built-in battery, and supports charging while using or a battery power supply. It's recommends using a charger with output voltage and output current of 5V3A, 5V4A, or 5V5A. Spring Buckle Install Design: With a newly designed locking spring buckle, the CU01 cooler is compatible with most side-flipping screen cameras. The -up locking mechanism securely holds the cooler in place, preventing it from falling off, offering a hassle-free experience. You can focus on capturing your perfect shot without worrying about your equipment's stability. Powerful 3000mAh Rechargeable Battery: The CU01 camera cooler features a 3000mAh replaceable battery, offering excellent portability for uninterrupted . Unlike other camera coolers, the CU01 cooling fan supports endless 85 minutes of cooling in 1st gear, 65 minutes in 2nd gear, and 65 minutes in AUTO mode. Camera cooler fan ensures extended performance for outdoor , live streaming, and video recording(Replacement battery: B0FHDC2FPP; single cooler only: B0DSHR2MJP). Temperature Control: Equipped with an temperature sensor, the CU01 camera cooler automatically adjusts its cooling power to maintain optimal temperatures for your camera. The AUTO mode ensures your camera stays within a safe range (around 8C), preventing overheating while recording in high temperatures. This ensures smooth and stable performance during extended filming or photography sessions. Quiet Operation & Multi-Speed Control: Choose from three adjustable fan speeds to suit your needs: low-speed mode (1), 6.5W,36dB, perfect for silent , or 7.7W with 39.4dB high-speed mode (2) for intense cooling during long recording sessions. The intelligent auto mode dynamically adjusts between 5.8W to 7.7W, maintaining an efficient, quiet operation with noise levels as low as 36dB, ideal for professional and outdoor photographers and videographers. Superior Cooling Technology: The CU01 camera cooler features an advanced semiconductor cooling system, combining ceramic Peltier chips and high-density aluminum alloy fins with a 6000RPM high-speed fan. This setup delivers rapid cooling, effectively lowering your camera's temperature to prevent overheating during extended use, perfect for long outdoor shoots, video recording, and high-performance tasks like 4K video or long exposure photography with no condensation. Color:Black Material:Aluminum Plastic Package Contents: 1 * semiconductor heat sink 1 * battery module 1 * charging cable 1 * Instructions in Chinese and English Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.