49 Keys Wireless Bluetooth Mini Keyboard Multi System Universal Portable Keypad 1. Material: ABS 2. Number of keys: 49 keys 3. Bluetooth version: Bluetooth 3.0 4. Charging time: 3-4 h 5. Battery capacity: about 140mah 6. Key technology: crater architecture 7. Connection: Wireless Bluetooth connection 8. Working range: 0-10 m 9. Weight: about 85 g 10. Dimensions: about 11.4 x 6 x 0.9 cm Features: 1. Suitable for desktop computers, laptops, tablet PCs, smartphones with bluetooth function (mainly suitable for iphones; Android system phones can also be used, but there are individual keys are not fully compatible) 2. This bluetooth keyboard is generally used in smart phones more, easy to carry, compact and flexible 3. Sitting on the sofa, lying in bed, wireless remote control computer, simple back to the message, browse the web, watch a movie, with this mini bluetooth keyboard is a great choice 4. Compact, practical, Bluetooth wireless pairing, no need to connect the line to use the effective distance of 10 meters 5. Built-in lithium battery, fully charged for about 10 hours of continuous use, can be recharged again and again to use 6. USB cable charging, anytime, anywhere, comes with a USB charging cable, connected to the computer anytime, anywhere charging, especially convenient