Features: 1. English QWERTY Keyboard Layout. (Other Language Keyboard Layouts Are Not Supported). Compact And Ultra-Portable On The Move. 2. Lithium-Ion Polymer Rechargeable Battery. Truly Portable Design: Perfect . 3. Good Durability (No Moving Parts Inside). Full-Size Key Spacing And Shortcut Keys For Easy Operation. 4. No Need For A Physical Keyboard, Small Size And Easy To Carry, This Projection Keyboard Can Adapt To Most Working Environments. Easily Connect Via Bluetooth 2.0 HID Profile Version. Or USB. Connect Major Devices Like Tablets, Smartphones, Desktop Computers And . 5. As A New Type Of Input Device, It Uses The Built-In Infrared Laser Transmitter To Project The Standard Keyboard Onto The Work Surface, Locate The Click Position, And Input Information Through Optical Recognition. Description: 1. Keyboard Size: About 7.8cm x 4cm x 1.9cm 2. Projection Size: About 10cm x 24cm 3. Connection : Bluetooth (If There Is No Bluetooth, A Bluetooth Adapter Is Required) 4. Battery Capacity: 700mah(Max)@3.7v 5. Battery Life: 120 Minutes 6. Main Functions: Keyboard Function, Mouse Function Material: ABS colour: black Package Contents: 1 x Wireless Keyboard 1 x Data Cable 1 x English Manual 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.