Features: 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: