Specification: Product material: ABS+PC Connection mode: 2.4GHz Maximum transmission distance: 10m Mouse Battery: Built-in durable 450mAh Keyboard Battery: 3.7V 250mah Package included: 1 x Wireless Keyboard 1 x wireless mouse 1 x usb cable 1 x Nano Receiver(at the bottom of the mouse) WIRELESS KEYBOARD MOUSE COMBO: The keyboard mouse combo includes a rechargeable keyboard and a high sensitivity rechargeable mouse. Works with your PC, desktop computer, laptop or notebook. Compatible with Windows XP / Vista / 7 / 8 /10 operating systems. ADJUSTABLE DPI AND ERGONOMIC DESIGN: 3 DPI levels (800/1200/1600 DPI) allows you to change the cursor sensitivity easily and track more smoothly over a variety of surfaces. Contoured shape fits your hands perfectly, reducing hand fatigue RECHARGEABLE DESIGN: Both the keyboard and the mouse use built-in lithium battery, can be easily recharged via supplied USB cable. No need to change the batteries RELIABLE 2.4GHz WIRELESS CONNECTION: One USB receiver for both keyboard and mouse without installing any additional software, plug and play, advanced 2.4GHz wireless technology ensures a stable and reliable connection. Automatic sleep function, if not used for 10 minutes, the keyboard and mouse will automatically enter the sleep state. You can press any button to restart. Compact Ergonomic design. Keyboard size: 285 * 131 * 18MM, Mouse size: 113 * 59 * 25MM.