brand new and high quality Features: Bluetooth-compatible 3.0 technology provides a cable-free and clutter-free connection. Built-in touchpad with control of pointing feature, support for smartphones and tablets. for Optimum for key spacing for fast, fluid typing, for Windows shortcuts, media control for key, and trackpad for precise control and navigation. Made of high quality ABS material, providing a pleasant typing experience for users. Longer using for time with rechargeable lithium battery, work continuously for 100 hours after per full charge.Integrated lithium battery provides stable operation on business, while auto-sleep feature saves power and ensures you get the most out of every charge. Ultra-thin design makes it easier to carry. Specifications: Standard Bluetooth-compatible 3.0 interface Working Distance: 10m Modulation method: GFSK Working voltage: 3.1-4.2V Working current: 3.0mA Standby current: 0.3mA Sleep current: 0.1mA Charging current: 200mA Standby time: 95 days Charging time: 2 hours Lithium battery capacity: 200mAh Sustainable working time: 76 hours Lithium battery life: 3 years Standby time: approx. 90 days Charging time: 3 hours Button force: 50-80g for Key life: 3 million clicks Working temperature: -10- 55 Material: ABS + PC Size: approx.240x179x6mm/9.61x7.05x0.24in Optional Colors: Black, White Quantity: 1 Set Note: Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package Includes: 1 x Bluetooth-compatible Keyboard 1 x USB Charging Cable 1 x User Manual (other accessories demo in the picture is not included.)