Feature: 1. Multi Function Keys: Multi function keys, the keyboard comes with 13 shortcut keys, which is more convenient to use. 2. Characteristics: With round keycaps, ergonomic design, ultra thin and silent, ultra long key life, comfortable and skin friendly feel, the keyboard is responsive. 3. Smart Touch: Smart touch, supports multiple touch gestures, easy to use. Ultra thin body, light weight, easy to carry. 4. Widely Compatible: Easy to switch and stable connection, can support terminal devices with BT external keyboard and switch between devices smoothly, suitable for smartphones, tablets or laptops. 5. Built in Battery: Built in rechargeable battery, long lasting standby, USB interface, durable, can be recharged repeatedly. Specification: Item Type: Touch Wireless Keyboard Material: ABS Standby Time: > 100 Days Effective Operating Distance: within 10 Meters Charging Time: 2-3 Hours Modulation Method: GFSK Working Voltage: 3.0-4.2v Working Current: <8mA (when the Touchpad is Working) Standby Current: <0.3mA Button Strength: 80+10g Sleep Current: <40uA Button Life: 3 Million Clicks Charging Current: 100mA Working Temperature: -10℃ to +55℃ Built-in Lithium Battery Capacity: 280mah Lithium Battery Life: 1 Year. Package List: 1 x Touch Wireless Keyboard1 x USB Charging Cable1 x Chinese and English User Manual