Features: Wide range of uses With this remote control, you can play short video software, take pictures with your mobile phone, read novels, read comics, etc. Ring shape: Ring design, small size, light weight, easy to carry on your fingers, ergonomic design, will not fall off, and will not be tired when using it. High quality: The video controller is made of plastic, safe and skin-friendly, ergonomic ring design, comfortable and beautiful to wear. When using a mobile phone or other BT device for remote control for the first time, you need to connect it first. Say goodbye to sore hands and cramped fingers: With our multi-function vibration remote control, you can free your hands and enjoy your favorite media comfortably. Note: 1. Due to different lighting effects, the actual color may be slightly different from the picture 2. Due to manual measurement, please allow 1-3cm deviation Description: Size: 3.7x8x3.3cm BT version: 5.3 BT transmission range: 15m Charging interface: Type-C Input current: DC5V Battery: 30mah*1