Feature: 1. Compatible with iOS/ Android/ Windows laptops, tablets and cellphones to fulfil the need of people who have different devices. Press Fn and Q/ W/ E to switch system. 2. Applying scissor switches, they enable keys to pop up much faster after being depressed, increase the longevity and make it harder to get particles under the keys. Besides, in this way, It is more comfortable and more responsive for typing. 3. BT 3.0 offers easy connection and operating distance of 10m. 4. Pocket-size design provides a possibility of taking it with you anywhere, anytime. 5. Slim and light, a perfect choice for travelers. Specification: Feature: Compatible with iOS/ Android/ Windows laptops, tablets and cellphones to fulfil the need of people who have different devices. Press Fn and Q/ W/ E to switch system. Applying scissor switches, they enable keys to pop up much faster after being depressed, increase the longevity and make it harder to get particles under the keys. Besides, in this way, It is more comfortable and more responsive for typing. BT 3.0 offers easy connection and operating distance of 10m. Pocket-size design provides a possibility of taking it with you anywhere, anytime. Slim and light, a perfect choice for travelers. Specification: Name: Folding BT Keyboard Color: Black, White (Optional) Main material: ABS Key quantity: 67 Interface: BT 3.0 Battery capacity: 120mAh Rated voltage: 3.0~4.2V Keystroke life: 3 million times Operating distance: 10 meters Item folding size: 150* 85*15mm / 5.91* 3.35* 0.59in Item full size: 312* 85* 7mm / 12.28* 3.35* 0.28in Item weight: Approx. 133g / 4.69oz Package size: 210* 120* 20mm / 8.27* 4.72* 0.79 in Package weight: 175g / 6.17oz Packing list: 1 * BT keyboard 1 * USB cable 1 * User manual Package List: 1 * BT keyboard 1 * USB cable 1 * User manual