Feature: 1. With long battery life,the standby time up to 100 days.The keyboard can be used continuously for 150 hours.The built-in battery can be recharged repeatedly, no need to buy batteries. 2. The keyboard adopts round keycaps,uniform force,scissor foot structure,good rebound touch feeling. 3. BT3.0 keyboard,with stable signal and quick transmission,10M distance coverage for wireless connection. 4. Wide Compatibility,suitable for phones,tablets,laptops of Windows,Mac,Android and IOS system. 5. Ultra-thin and small design of the keyboard,easy to carry. Specification: Features: The keyboard adopts round keycaps,uniform force,scissor foot structure,good rebound touch feeling. BT3.0 keyboard,with stable signal and quick transmission,10M distance coverage for wireless connection. Wide compatibility,suitable for phones,tablets,laptops of Windows,Mac,Android and iOS system. Ultra-thin and small design of the keyboard,easy to carry. With long battery life,the standby time up to 100 days.The keyboard can be used continuously for 150 hours.The built-in battery can be recharged repeatedly, no need to buy batteries. Specification: Color: White/Black(Optional) BT Version: BT3.0 Coverage Range: 10M Key Quantity: 78 Keys Standby Time: 100 Days Battery Capacity: 180mAh/450mAh(backlight version) Continuous Work Time: 150 Hours Charge Time: 2-3 Hour Work Voltage: 3.0-4.2V Work Current: <2.5mA Charging Current: >200mA Key life: 5 million clicks Charging Method: Type-C USB Item size:24.6*15*0.5 cm / 9.7*5.9*0.2 in(L * W * H) Package size:26*19*3 cm / 10.2*7.5*1.2 in(L * W * H) Package weight:262g /9.2 oz Package List: 1*Keyboard 1*USB Cable Package List: 1*Keyboard 1*USB Cable