Wireless: 2.4G wireless network delivers professional-grade performance with flexibility and freedom from cords. Wider range of applications. This keyboard is programmable and can be set as any hot key or shortcut to meet your needs. Our 1-key keypad is built for durability: ABS construction and keys that can endure up to million keystrokes. Mechanical switches provide a bouncy feel with every word you type. Rechargeable: 5 hours full charge can last up to 20-25 days. If it is in low battery, the LED light will flash intermittently to remind you. Compatible with various computer systems. Please set up in Windows system first, then you can freely use it on different devices. Compatible Devices: Laptop, PC, Tablet, Smartphone. Connectivity Technology: Bluetooth, USB-A. Recommended Uses For Product: Video Editing, Everyday Use, Education, Business. Number of Keys: 1. Style: Classic. Colour: Black/White. Material: ABS. Package Contents: 1 x Data cable, 1 x Keyboard, 1 x USB wireless receiver. Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to appear slightly different from the real thing. The measurement allowed error is +/- 1-3cm.