Product parameters: Optical Resolution:1000 DPI Mouse Connection:Wireless Keyboard Connection:Wireless Supports Human Engineering:Yes Connection mode: 2.4G Product material: ABS+PC Transmission distance: <=10m Powered by AAA battery: Not included Compatible system: MAC Windows 10/8.1/8/7/XP/Vista Linux etc. DPI:800-1200-1600 Features: 1. 2.4 GHz wireless technology delivers a reliable connection with up to a 10M range. 2. No wires make a more smart and tidy desktop. 3. The keyboard and mouse share the same USB receiver to save the computer's USB interface. 4. Very resposive keys in scissor-key-switches. 5. Real compact and slim in fullsize design. 6. Low power battery indicators and multi-media hot keys provide convenience. 7. Keyboards keys in low profile make much less noise when typing.