Description: Wireless : Digital keyboard with HUB, connection, simple design, practical and convenient Interface: Type C port and 2Pcs USB 3.0 ports Widely Compatible: for Windows system, for Android system, / for OS .Compatible with enabled devices, laptops, PCs,tablet, phone ect. Rechargeable Battery: Built in 110mAh battery, 2 hours charging time ,standby up to 2 months. Portable Keypad:Aluminum slim Keypad,plug and play, no additional settings,you can easily fit into any backpack,bag ect. Specification: Type: Numeric Keypad Number of keys: 34 keys version: 3.0 transmission distance: 10 meters Keyboard life: (number of keys) 5 million times Response speed: 5ms Working current/voltage: 2mA/3.7V Built in lithium battery: 110mAh Charging time: 2 hours time: 50h Standby time: >2 months Line length: 1.5 Support system: for Windows, , for Android Material: aluminum alloy Size Chart: 15.5cmx12.5cmx2.85cm/6.10inchx4.92inchx1.12inch Package Includes: 1 Piece Numeric Keypad Keyboard 1 Piece Charging Cable 1 Piece Manual Note: 1.Please allow 1~3 cm error due to manual measurement, thanks. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Please understand, thank you.