Features: 1. Magnetic design, stable adsorption, not easy to drop, easy to take 2. One-piece tablet protective case, light and thin, convenient and quick to use. 3. Stand design, free your hands while working or watching movies. 4. Using PU leather + TPU, the touch is delicate and smooth, and the aluminum alloy shaft is used, which is beautiful and fashionable. Parameters: 1. Bluetooth version: V5.0 2. Operating distance: Up to 10m 3. Charging time: 2-3 hours 4. Working voltage: 3.3-4.2V 5. Charging interface: Type-C 6. Charging current: Less than or equal to 200mA 7. Lithium battery capacity: 280-420mAh 8. Standby time: About 120 days when fully charged 9. Continuous working hours: Greater than 120 hoursSpecification: General Compatible with Samsung:  Galaxy Tab S9+ Package Weight One Package Weight 0.95kgs / 2.09lb One Package Size 41cm * 33cm * 2.5cm /