Product Name: Multi-Function Bluetooth Ring Remote Control Compatible Systems: For Android,for iOS Functions: Stream videos, play for TikTok, read e-books, turn pages, take selfies with your girlfriend, adjust volume, browse mode, music mode, mouse mode, and control in-car devices Battery 1. Rechargeable lithium battery (1 x 300811) 2. Total capacity: 3.6V/17mAh 3. Battery charging current: no more than 25mA 4. Supports 7 hours of continuous operation 5. Low power mode: over 72 hours 6. Battery remains fully depleted after being in shutdown mode for over a month 7. Charging time: approximately 1 hour Bluetooth 5.3 Low Energy Transmission 1. Frequency Range: 2402-2480 MHz 2. Transmit Power: Up to 4 dBm 3. Receive Sensitivity: -70 dBm 4. Operating Range: At least 10 meters 5. Pairs with up to three Bluetooth devices Optical Touch Module 1. Motion Detection: 50 to 3200 CPI (typical) @ 1000 CPI 2. Tracking Speed: Maximum 24 inches/second Features: 1. Skin-friendly silicone for comfortable wearing 4 sizes of silicone rings included to accommodate different finger sizes 2. Magnetic Charging: N52 NdFeB strong magnetic tip automatically attaches and charges instantly Colors: Black, Silver, Gold Packaging Weight: 160g Packaging Dimensions: 3.8*10.8*12.2cm Packaging: Boxed Includes: 1 ring body, 1 silicone ring x4, magnetic charging cable x1, instruction manual x1, quick lift x1, QR code card x1