Compatibility: This case is compatible with Samsung Galaxy Tab S9 FE 5G 10.9 inch Model SM-X510, SM-X516, SM-X518U and Samsung Galaxy Tab S9 11 inch Model SM-X710, SM-X716, SM-X718U (2023 Release). It is not compatible with any other tablet models. Multiple Viewing Angles: The removable keyboard doubles as a stand. Supports 3 adjustable viewing angles with built-in anti-slip grooves. Slide the keyboard forward or backward along the cover to adjust the tablet angle to your preferred position. Dual Protection: Durable PU leather exterior and anti-slip rubber-lined interior provide full protection. Soft flexible TPU back shell safeguards your Samsung Tab from shocks, drops, and impacts. Supports auto sleep/wake function in case-only mode. Specifications: - Bluetooth version: 3.0 (backward compatible with Bluetooth 3.0, 4.0, 5.0, 5.1) - Effective distance: Up to 10 meters - Standby time: Up to 100 days - Continuous working time: At least 100 hours - Charging time: 2–3 hours - Battery type: Lithium polymer battery - Battery capacity: 280mAh - Battery lifespan: Up to 2 years - Key life: 3 million clicks - Modulation mode: GFSK - Operating voltage: 3.0–4.2V - Operating current: 4–8mA - Charging current: 100mA (normal) - Materials: Keyboard cover (PU/TPU), Keyboard (ABS)