Description: Operation: This controller is suitable for phones, supporting remote brush short video, remote like, turn page, adjust volume, take photos, selfie, etc. Rechargeable: This remote control ring is designed with a built-in 50mAh battery, it can be used for a long time after fully charged. Portable: This smart ring is easy to store and carry, you can wear it on your fingertip easily, flipping the button to control your cellphone. Applications: This smartphone controller is suitable for home and travel use, convenient for you to enjoy life with fingertip. Specifications: Color: white, black, pink. As shown in the figure. Battery: built-in 50mAh. Charge type: USB. Work time: about 48h continuously. Support APP: mainstream APP. Bluetooth-compatible: V5.3. Charging time: about 2h. Input: DC5V. Attention: Due to the light and screen difference, the item’s color may be slightly different from the pictures. Please allow a slight deviation for the measurement data and make sure you do not mind before ordering. Package includes: 1 Piece Wireless Ring Controller(with 1 Piece USB Cable).