Multi-System Compatibility: Supports iOS, Android, and Windows systems. Easily switch between systems by pressing Fn and corresponding keys (QWE). Full Shortcut Keys: Customized hot keys for iPads provide efficient operation, enhancing productivity and user experience. Long-lasting Battery: Powerful 150mAh lithium polymer battery offers over 80 hours of continuous work and 100 days of standby time on a single 2-3 hour charge. Energy-Saving Design: Automatically enters sleep mode after 15 minutes of inactivity, easily awakened by pressing any key. Durable Construction: PU leather cover with magnetic buckle and non-slip rubber lining provides comprehensive protection and stable multi-angle support for iPad. Comfortable Typing: Mechanical scissors keyboard design ensures quick rebound and smooth key presses for a superior typing experience. Specifications: Battery type: Lithium polymer battery Bluetooth-compatible version: 3.0 (upward compatible with 3.0/4.0/5.0/5.1 Bluetooth-compatible devices) Effective distance: 10 meters Standby time: 100 days Continuous working time: Not less than 80 hours Charging time: 2-3 hours Lithium battery capacity: 150mAh Lithium battery life: 2 years Key life: 3 million clicks Modulation mode: GFSK Working voltage: 3.0-4.2V Working current: 4-8mA Charging current: 100mA (normal) Material: Protective case: PU+TPU, Keyboard: ABS Package included: 1 x Keyboard 1 x Leather Case 1 x Charging Cable 1 x English Instruction Manual