Features: Charge anytime, anywhere: 48 hours of continuous use. Provides a convenient charging method without any additional conditions. Compatible with traditional applications on the market, portable and lightweight, it is the best partner for photography. SMART WEARABLE DESIGN: The ergonomic ring design allows you to wear comfortably and is the perfect gift for birthdays, Valentine's Day and more. You don't need to swipe the video with your finger while enjoying Short video platform. You can also scroll through Short video platform without having to go up and down the page, volume up and down, play and pause, send likes with your hands. (Cannot control music player application). Mobile phone camera: You can take pictures and video. BT Compatible Remote Control: Press the up or down button on the ring within 10 meters of the phone in photo or video mode. A charging bay version is available describe: Product name: remote control ring Bluetooth-compatible version: v5.3 BT-chip compatible Input power: . DC-5V Product color: black/white/pink Battery capacity: 30mah Charging capacity :200mah (including charging capacity) Use time: continuous use about 48h Supported applications: Support mainstream applications packing list: Compatible remote control with BT x 1 usb data cable x 1 Notice: 1. Due to manual measurement, please allow 1-3cm error. Make sure you don't mind before bidding. 2. Due to different monitors, the pictures may not reflect the actual color of the product. thanks.