Features: 1. The wireless keyboard is designed for the Russian with Russian and English language. 2. Made of good quality ABS and metal material, solid, durable and wear-resistant. 3. Low consumption and energy-saving, the keyboard can last for more than 40 hours continuously, don't worry about running out of power. 4. Built-in 120mAh high-performance lithium battery, avoid the bother of replacing the battery, more convenient. 5. Small size and lightweight, portable, ultra-thin, and very convenient for you to carry it on your travels or business trips. 6. Adopts Broadcom bluetooth 3.0 module. It is suitable for iOS, for Android, and for Windows, which has optimized shortcut keys for all systems. 7. It can be used with smart phone, tablet computer and notebook computer. Specifications: Material: ABS + Metal Color: Black Supported Languages: Russian, English, Bilingual Operating Distance: 10 m Operating System: for Windosws, for Android, for iOS Working Voltage: 3.0-5.0V Working Current: < 2.0 mA Standby Current: 0.3-0.5 mA Sleep Current: < 25 UA Charging Current: 100 mA Charging Time: 4 hours Lithium Battery Capacity: 120mA Uninterrupted Working Hours: 40 hours Standby Time: 60 days Lithium Battery Life: 3 years Keyboard Life: 5 million Times Working Temperature: -10-55 + C Size: Approx. 200*125*5 mm/ 7.87*4.92*0.20 inch Use tutorial: 1. Then push the [OFF switch on the lower right side of the Bluetooth keyboard to ON], then the blue light is on, and the keyboard is activated. 3. Turn on the device, find--Settings--Turn on Wireless and Networks--Turn on Bluetooth--Search for nearby devices--[Search for the name of the Bluetooth keyboard] and click to connect. 4. The device screen prompts [Bluetooth pairing request (enter Bluetooth password XXXX to pair with "Bluetooth keyboard")], enter the number displayed on the screen on the Bluetooth keyboard and press the Enter key, the connection is successful! Packing List: 1 * Wireless Keyboard Note: This product does not include wire, users can charge for it using USB cable. .