Features: 1. Ergonomic design offers enhanced comfort and handling. 2. Compatible with Android, Windows, and Mac OS operating systems. 3. 22-key wireless ultra-thin numeric keypad supporting Bluetooth 5.0. 4. Usage time extends up to 80 hours with a lifespan of up to 3 million keystrokes. 5. Scissor switch mechanism design ensures rapid rebound speed and reduced latency. Specifications: Item Type: 22-Key Numeric Keypad Material: ABS Available Colors: Black, Silver Black, Iron Gray, Rose Gold Supported Operating Systems: Android, Windows, Mac OS Number of Keys: 22 Bluetooth Compatibility: Bluetooth 5.0 Keyboard Lifespan: 3 Million Keystrokes Response Speed: 5 Milliseconds Transmission Distance: Approximately 10m / 32.8ft Operating Current / Voltage: 0.25mA at 3V Battery Type & Capacity: 2xAAA (Batteries Not Included) Usage Duration: 80 Hours Package List: 1 x Numeric Keypad (Batteries Not Included) 1 x User Manual Note: Please be aware that product models may vary by shipment. Please verify suitability before ordering.