There are many good qualities for this product, such as bluetooth 3.0 wireless technology, two AAA batteries and power switch.It works smoothly with Blutooth-enabled devices and the keys controlled by cross key mechanism are quieter and require less force to press.Made of high quality ABS material, it is durable to use.The length of the product is 28.5cm, the width is 12cm and the thickness is 1.8cm.It is suitable for smart phone, for iPad, tablet, PC and for iPhone.Item Name: bluetooth-compatible KeyboardMaterial:ABSStyle: ModernType: StandardPower Supply: Two AAA Batteries (Not Included)Bluetooth: 3.0Number of Keys: 78 KeysApplicable System: for iOS, for Android, for WindowsSize:28.5cmx12cmx1.8cm/11.22inx4.72inx0.71inNotes: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.The language of A type is Spanish, B tye is German, C type is Korean, D type is Russian, E type is Arabic, F type is French, and G type is English.Package Includes:1 X Blutooth Keyboard1 X User Manual