Feature: Ideal for typing emails, chat, and playing games.Pocket size, sleek and slim design.Extended battery life for hours of typing. Compatible with Bluetooth 3.0.49 responsive, accurate standard QWERTY keys lay out.Built-in rechargeable Li-ion battery.Specification:Support mobile operating system: for Apple iPhone 4.0 version and later, for Windows Mobile 6.0 and later, for Nokia Symbian V3.0 and laterFrequency band: 2.4 - 2.4835GHz unlicensed ISM bandReceiving sensitivity: -75dbm (standard)RF output power: 4dbm maximumBluetooth Version: 3.0Standby: 400 hoursPower: Charges by USBCharging time: 3-4 hourssize: 114 x 58 x 6mmMaterial: Plasticcolour: BlackPackage Contents:1 x Wireless KeyboardOnly 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.