ESYNIC Bluetooth Folding Full Size Keyboard Full Size: Unfolded Size is About 29.2cm in Length, Lager Then Most of The Usual Foldable Keyboard in The Market, Provide You A Comfortable Tying Model. Portable Folding Design: Special Folding Design Make It Possible for You to Put It In A Purse, Pocket or Bag, So Allows You to Carry Anywhere. Whisper-quiet Typing: Low-profile Chocolate Buttons Provide You with Very Comfortable and Pleasing Typing Experience. Full compatible with Android/Windows/IOS, it can Works with Most Bluetooth Supported Devices. Rechargeable Battery: Built-in 210mAh Lithium Battery and Convenient USB Charging, You can Charge it via USB and Use it while Charging, No Worry about Batteries. Designed with Non-Slip Mat: With The Non-Slip Mat, No Need to Worry About Moving by Accident,Focus on Working or Contacting with Friends.