[Compatibility]：Suitable for Osmo Action 5 Pro, Action 4. [Endurance]: Equipped with a built-in 4900mAh battery, this handle provides approximately 7 hours of operating time for Osmo Action 5 Pro/ Action 4. [Non-waterproof]: The Multifunctional Charging Handle is not waterproof. Do not use it underwater. [essentials for use]: The 3.5mm TRS input port on the back is for connecting 3.5mm three-stage microphones and does not support 3.5mm headphones. [In The Box]: Multifunctional Charging Handle*1, Charging Port Protector*1, Wrist Strap*1. This handle features a high-capacity battery, camera control, ball-joint adjustment, 3.5mm audio adapter, tripod support, and a 1/4″ thread hole. While in use, attach the charging port protector and make sure that the USB-C port cover on the back of the charging handle is fully closed. Make sure that the charging handle has power when using a microphone. In camera modes that consume a lot of battery power, make sure the battery is installed securely to keep the camera running smoothly.