Features: Sleek, ultra-slim (About 4mm thickness) design makes for easy portability. Lighter than a standard magazine, yet durable enough to travel. Integrated lithium battery provides stable operation on business, while auto-sleep feature saves power and ensures you get the most out of every charge. Bluetooth-compatible 3.0 technology provides a cable-free & clutter-free connection. Operating distance: 10m. for Cross Compatible: Built-in touchpad with Control of Pointing Feature (Works with for Windows 7/8, for Windows Vista and for Windows XP); Support for smartphones and tablets. The split keys and scissors switches will make your typing as comfortable as that on a laptop. Specifications: Material: plastic Size: approx. 259x173x4mm/10.2x6.81x0.16in Color: black, white Charging time: less than 3 hours Lithium battery capacity: 220mA Working temperature: 10-55 degrees Button life: 3 million times Working range: within 10 meters Modulation method: GFSK Bluetooth-compatible version: 3.0 Working voltage: 3.1-4.2V Note: No retail package. Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you Package includes: 1PC x Wireless Bluetooth-compatible Keyboard