Features:1. Built-in Broadcom 3.0 chip, 280mAh lithium battery, it can be used continuously in 90 hours.2. X scissors feet structure, it's sensitive to press keys, make you type fast with good feeling.3. Keyboard surface uses texture processing, high-end.4. Screen printing UV peritoneal treatment, never fade.5. The bottom shell is made of iron plate.6. Standard MICRO interface.Specifications:Interface standard: Bluetooth 3.0Charging time: less than 2 hoursEffective range of operation: within 10 metersLithium battery capacity: 110mASustainable working hours: more than 40 hoursWorking voltage: 3.0-4.2VWorking temperature: minus 10 degrees to 55 degreesStandby current: less than 0.3mAButton force: 60 plus or minus 10gKey life: 3 million clicksStandby duration: less than 100 daysCharging current: less than 200mAPackage Included:1 x Keyboard Note :Please allow slight dimension difference due to different manual measurement.Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures.