Description/Features: Concave fingertip design for comfortable and gentle typing Scissor foot button structure Compatible with multiple systems and devices Convenient to carry mini foldable keyboard he Bluetooth keyboard provides you with a very comfortable and pleasant typing experience. : Effective range of operation: 10m Can work continuously: 30 hours Supported systems: for iOS/Android/Windows Charging time: Less than2 hours Lithium battery capacity: 150mAh Key lifespan: Greater than3 million times Standby time: 150 days standby Current: 0.3mA Modulation : GFSk Working voltage: 3.0-4.2V Note: Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Will Not Affect The Use Material: abs colour: Black Package Contents: 1 x keyboard 1 x charging cable 1 x bracket Only 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.