MoKo Universal Ultra-Slim Aluminum Wireless Foldable Bluetooth Keyboard - Black Foldable design, perfect portable Keyboard with pocket size. Folding size: 5.8"*3.5"*0.7", Open size: 9.9"*3.5"*0.2". Made of excellent aluminium material for superior rigidity. X scissor-switch structure for the keycap brings you pleasing typing experience. Compatible with 3 major operating system: iOS / Windows / Android. Supports most Wireless-enabled devices including Apple iPhone 8 / 7 / 7 Plus / 6s / 6s Plus, Samsung Galaxy Note 8, etc. Built-in 210mAh rechargeable Li-polymer battery, works for up to 80 hours of effective usage time. Magnetic switch with smart auto sleep / wake feature. Press Fn+C, fast access to Wireless pairing state. American broadcom chip for high speed connection and signal distance up to 33ft(10m).