【2-in-1 Bluetooth-compatible Keyboard and Tablet Cover】Bluetooth-compatible keyboard and PU leather tablet protective case 2-in-1 design 【Convertible Stand for Hands-Free Use】Can be converted to a supporting stand for hands-free movie watching and web surfing 【Stylus Pen Holder Loop】There is a loop to place your stylus pen, don't worry about losing it (not Included stylus) 【Durable Bluetooth-compatible 3.0 Keyboard】The Bluetooth-compatible 3.0 keyboard has long-lasting button life, durable to use 【Rechargeable Lithium Battery】The keyboard has built-in lithium battery, convenient to charge and use 【Slim and Lightweight Design】Slim and lightweight design, convenient for travel, business trips, etc. Specifications: Model: AM31 Weight: 605g Product size: 27.5*18.3*2cm Bluetooth-compatible version: 3.0 Effective operating distance: 10 meters Modulation mode: GFSK Operating voltage: 3.0-4.2V Operating current: <2.5mA Standby current: <0.3mA Sleep current: <40uA Charging current: >200mA Standby time: >100 days Charging time: 3-4 hours Lithium battery capacity: 200mAh Sustainable working time: 100 hours Lithium battery life: 3 years Key force: 80±10g Key life: 5 million clicks Operating temperature: -10~+55℃ Charging port: Type-C