[ Broadcom BT 5.1 Chip Compatible with Most Devices ] - The high level of compatible devices suggests that you'll use this keyboard for many Bluetooth-enabled devices. Windows, and iOS are compatible with keyboard. If you modify your phone or if you change your laptop/, 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 has a rechargeable lithium-ion battery. Standby time is up to 90 days.High Grade Mini Portable Foldable Folding Wireless Bluetooth 5.1 Keyboard Type-C charge port for Windows / / for ios / os smart devices like computer laptop pc phone etc. with BT function.High grade design, materials and workmanshipWhole flat, type smoothly, very good hand feelingsBroadcom BT5.1 Chip , fast , stable, strong compatibility,widely useBuilt-in Rechargable Li-battery, one time full charge can use for very long time(about 2-3 month).It can connect and work for 3 devices at same time, just click fn + BT1 (key A) , BT2 (key S), or BT3 (key D) to fast change , very convenient.fn+ C (pairing) to do pair and connect.Wireless Bluetooth 5.1 connectionNumber of keys: 65Chip: Broadcom BT5.1 ( fast, stable, low -consumption )Type-c charging portBluetooth transmission distance upto 10Working voltage: 3.3~4.2VBattery: rechargable 90mAh lithium batteryWorking current: Less than 3MAStandby current: Less than 1MACompatible system: Windows//for IOSType:Bluetooth Wireless keyboardApplication:Desktop,Laptop,Number,Keyboard Standard:Mini KeyboardStyle:StandardInterface Type:USBcolor:Black greyMaterial:ABSsize:Folded 142mm x 101mm 2x 3.8mm, unfolded 270mm x 101mm x 11.9mmPackage Contents:1 x folding Wireless 1 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.