Compatibility: This case is compatible with Samsung Galaxy Tab A7 10.4 (2020) tablet model SM-T500, SM-T505, SM-T507. It will not work with any other device models. Multiple Viewing Angles: The removable keyboard doubles as a stand for the tablet. Supports 3 viewing angles with built-in anti-slip grooves. Adjust the tablet angle by moving the keyboard forward or backward along the cover. 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: Bluetooth 3.0, backward/forward compatible with Bluetooth 3.0, 4.0, 5.0, 5.1 - Effective distance: 10 meters - Standby time: 100 days - Continuous working time: not less than 100 hours - Charging time: 23 hours - Battery type: Lithium polymer battery - Lithium battery capacity: 280mAh - Lithium battery lifespan: Up to 2 years - Key life: 3 million clicks - Modulation mode: GFSK - Operating voltage: 3.04.2V - Operating current: 48mA - Standby current: