Keyboard: Wireless carrier frequency: 2402MHz-2480MHz Operating frequency: 16, automatic frequency hopping Rated working current for the keyboard: 28mA/3V Tracking system: optical Resolution: 1000CPI The photoelectric sensor may not work on mirrors or clear glass Battery life may vary depending on individual use Do not discard the battery or throw it into the fire. When replacing the battery, put the old battery in the battery recycling box System support: Windows Me/2000/XP/Vista operating systems and a free USB interface Mouse: Rated working voltage for the mouse: 1.5-3V Rated working current for the mouse: 10-15mA Mouse resolution: 800-1200DPI Wireless working channels: 16, automatic frequency hopping Wireless operating frequency: 2.402-2.480GHz Wireless transmission rate: 1-2M bps Maximum effective distance: 6-10 meters Maximum acceleration: 28 inches/second Image processing: 3000 frames/second Mouse button lifespan: 3-5 million times Operating temperature: -15 ℃ to 60 ℃ Keyboard size: 36.8 * 14.3 * 2.63 cm Keyboard net weight: 390G (receiver) including USB) Keyboard working voltage: 3.0 V Mouse size: 11.6 * 6.6 * 3.5 cm Mouse net weight: 63 ± 2 g Mouse DPI: 800, 1200, 1600 Mouse working voltage: 1.5V. Waking method: press any key Service time: 3 million hits Product material: ABS + PC Transmission distance:<=10m Battery: 2pcs AA (keyboard), 1pc AA (mouse) Test system: MAC, Windows, Lin Package contents 1 * Wireless keyboard 1 * Wireless mouse 1 * Nano USB receiver (stored on the back of the keyboard) 1 * User manual