This bluetooth multimedia remote control has its own polymer battery, no need to buy it separately; Really small and light, only 12g in weight, no matter it is hung on the keychain or worn on the body, it will not feel heavy; the small body can be hidden in your hand, play games with your friends or play pranks, such as quietly connecting His mobile phone, operate his video APP from a distance, LOL There is no need to install other software, just follow the instructions and perform Bluetooth matching on the mobile phone/Pad, once matched, you can use it freely When giving likes to favorite hosts or friends, or using the like function, the interval between double-clicks should not be too long, just fast and continuous. If the interval is too long, it will be judged as: pause/play function When using the wireless camera controller, please keep the farthest distance between the camera phone or Pad and your controller within 15m Electronic equipment, please do not use in water If you have any questions or suggestions during use, please email us, we will actively improve and provide better products and services