Features:
1. Rechargeable design: built-in battery capacity 30mAh, charging box capacity 200mAh. It can last for more than 48 hours on a single charge and can be used for a total of 128 hours with the charging box, making it easy to use.
2. Wide compatibility: Supports most iOS or Android mobile phones and tablet devices on the market.
3. Easy to use: supports remote operation by clicking on the screen with the mobile phone. You don't need to hold your phone or tablet to watch videos from a distance.
4. Comfortable and convenient: Ergonomically designed, it can be worn as a ring on your finger. The selfie button allows you to watch short videos while lying down without having to manually turn pages on your phone.
5. Gift for friends: The mobile phone selfie remote control can be a perfect gift for friends and family on birthdays, Valentine's Day and other occasions.

Parameters:
1. Bluetooth version: V5.3
2. Product size: 37.5x18x32.9mm
3. Input power: DC 5V
4. Battery capacity: 40mAh
5. Charging compartment capacity: 200mAh
6. Duration of use: about 48 hours of continuous use
7. Support APP: Support mainstream APP
8. Product functions: Selfie, like, page up, down, left and right, volume increase and decrease, switch songs, one-click screen lock, fast forward and rewind