Ultra-thin design, the main thickness of only 6.7mm 78 button design, with seven multimedia keys Appearance, fashion, very fine With power switch to turn off the power when not in use, saving power Powered by 2 x AAA batteries (not included) Specification: Bluetooth version: V3.0 Operating distance: 10m Dimensions: 28.5x12.0x1.8cm Weight: 278g Compatible system: Windows compatible computer operating systems, such as windows 98, windows 2000, NT, XP, Vista, Win7 so, without driving, as long as Bluetooth can be installed directly Compatible with Mac os operating system, iPad, iPhone OS 4.0 does not need to install any drivers,can be used directly Package included: 1 x Wireless Bluetooth Keyboard 1 x English Manual Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Minnanxin