It is just 16.5mm after the merger with iPad. Since thickness of wireless keyboard of iPad is only 11mm. The machine weights just 280 grams, so that is is the best carry-on performance wireless keyboard. Allow users to experience a better sense compared to other wireless keyboard. Undoubtedly, the experience of mobile wireless keyboard is the best. Wireless Keyboard for iPad2, the most fashionable fit for your iPad. BT 2.0 interface standard, operating distance up to 10 meters, standby time 60 days , uninterrupted working time 55hours , Modern style designed for iPad. iPad display stand for easy viewing , Built-in Rechargeable lithium battery. Light weight 280g, Quit keystrokes, water and dust proof. • Operation Current: <5mA • Standby Current: 2.5mA • Operation Voltage: 3-5V • Operating distance to 10 meters • Standby time: 60 days • Charging Time: 4-5 hours • Lithium Battery Capacity: 160mA • Lithium Battery Life: 3 Years • Key Life: 5 million strokes Wireless Keyboard for iPad 2 Wireless Keyboard USB Charger Cable User Guide Sheet 1 Year Warranty