The high level of compatible devices suggests that you'll use this keyboard for many Bluetooth-enabled devices. Windows, Android and for iOS are compatible with keyboard. If you modify your phone or if you change your laptop/tablet, you'll simply keep using the same keyboard.[ Great for Trip and Normal use ] - Foldable, when folded, it will become small and portable, you will put it in your bags easy. take it everywhere in your trips. very convenient. and you can also use it as normal keyboard, very good type feelings.[ Rechargeable Battery ] - Users get pleasure from up to 40 hours of writing time with only one charge. The Wireless Folding Bluetooth Keyboard has a rechargeable lithium-ion battery. Standby time is up to 90 days.Bluetooth transmission distance upto 10mWorking voltage: 3.3~4.2VBattery: rechargable 140mAh lithium batteryCompatible system: Windows/Android/for IOSType:Bluetooth WirelessApplication:Desktop,Laptop,Number,TabletKeyboard Standard:Mini KeyboardStyle:Standard,MiniInterface Type:USB,Bluetoothcolor:BlackMaterial:ABS+Metalsize: folded 152 x 91 x 22mm, unfolded 315 x 91 x 11mmPackage Contents:1 x folding Wireless Bluetooth keyboard1 x Charging CableOnly 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.