Perfect size(11x4.7x0.7inch), ultra-thin, sleek profile easily to store in a backpack, messenger bag, or case. 3.0 technology ensures a cable-free and clutter-free connection. It is compatible with most device supporting , such as Tablet PC, Desktop PC, Laptop, smart TV and so on. Support IOS, Android, Windows system, German one-key switch function, simple 78-key edition is more convenient and easier to operate. Detailed texture and gentle feel, this keyboard provides better tactile response and quieter typing without bothering others. Suitable for travel, business trip, library. Requires 2 AAA batteries. Specification: Size: 285x120x18mm/11x4.7x0.7inch Net weight: 290g Color: White Language: German Using system: IOS/Android/windows Connection mode: 3.0 Wireless distance: 10M Package Includes: 1 x Wireless Keyboard Note: Please allow slightly 0-1cm difference due to manual measurement. Thanks for your understanding and attention. Wish you a pleasant shopping experience!