Product description Color:Pink, blue?black How to connect: 1.Turn on the power switch,the indicator flashes blue light.(If the light is not on, please charge the keyboard) 2.Turn on the Bluetooth on your device and let it search for nearby Bluetooth devices. 3.Battery capacity: 200mah 1.?Soft silicone material?Made of high intensity and high elasticity silicone gel. Quiet click, perfect for school, library, evening work or any silent environment without disturbing others. 2.?Built-in rechargeable lithium-ion battery?It doesn't take up the usb port on your computer, nor does it require an AAA battery.Fully charged for 2-3 hours of continuous use, standby time is up to 48 days. 3.?Waterproof and dustproof? No additional keyboard cover skin required, food crumbs or dust can be easily cleaned thoroughly. 4.?Note?Mini small Bluetooth keyboard(size:25.5*9.2*1.5cm).Portable keyboard foldable, Bluetooth connection,ultra slim and compact, can be folded very small to put in a backpack, great for travel. 5.?Broad Compatibility? Use with operating systems supporting Bluetooth (iOS, Android and Windows),suitable for mobile phones, tablets, computers, etc.