Features: BT Technology K380 multi-device keyboard is equipped with BT technology, can be satisfied at home, out or in a coffee shop to easily handle multi-tasking. Wide Compatibility K380 multi-device BT keyboard can be connected to almost all terminal devices that support BT external keyboards. EASY-SWITCH Smooth Switching Multi-device connection. Up to three devices with different operating systems can be connected, switch with just one touch. Laptop Experience The concave low-position scissor buttons can fit the shape of the fingertips, providing a smooth, quiet and familiar notebook-style input experience. 2-year Battery Life Built-in 2AAA alkaline batteries, battery life up to two years, no need to worry about powershortage. Specification: Model: K380 Color: Pink, grey,white,red blue(Optional) BT version: 3.0 Wireless range: up to 10 meters Connection method: BT Battery: 2 AAA Battery(Not included) Battery life: 24 months Item size:27.9*12.4*1.6cm / 10.98*4.88*0.63in(L * W * H) Item weight: Approx.400g /14.11oz Package size:28*13*2cm / 11.02*5.12*0.79in(L * W * H) Package weight:410g /14.46oz Packing list: 1 *BT Keyboard 1 *User Manual