Supports for multiple systems and iOS/Android/Windows. Folding keyboard, easy to carry, small bag can also fit. Mute keyboard, can handle various environments in a soft voice, such as libraries. Whether you're traveling or working on the go, this keyboard is an ideal companion,Convenient and Portable. Effective range of operation: 10m Continuous operation: 48 hours Support system: for iOS/Android/Windows Charging duration: 2 hours Battery capacity: 210mAh Standby time: 180 days Modulation method: GFSK Key lifespan:Greater than 3 million times Standby current: 0.3mA Working voltage: 3.0-4.2V Colour:Green Material:plastic Package Contents: 1 x Wireless Bluetooth folding keyboard 1 x USB cbale Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.