color:space gray,silver,local tyrant gold,rose gold Size: Folded Size: 55*222*20mm Unfolded Size: 170*222*6mm Material: ABS plastic + aluminum alloy Weight: 311g Use this portable keyboard and start typing using your phone instead. It has a foldable and thin design that makes it even more portable. There is a phone stand where you can conveniently position your phone while you type. Bluetooth version: Bluetooth 3.0/ Operating distance: About 10m/ Standby time: About 180 days. Lithium battery capacity: 400mAh Charging time:Uninterrupted Time: About 65-75 hours Features: Small and portable: The foldable design reduces the body width to 55mm. aluminum alloy: The keyboard shell is made of aluminum alloy oxidation process, which is sturdy and durable, with texture, highlighting the fashionable atmosphere. Smart switch: Magnetic suction type intelligent induction, open the keyboard cover to turn on the keyboard power, close it to automatically sleep, Fn+c can turn on Bluetooth pairing, which is faster.