2.4 Ghz wirelss mouse Optical Technology Bulit-in energy saving system Scroll easily in any direction Compatible with Windows & Mac Os Type: Mouse Mouse Type: Leisure Mouse Connect Type: 2.4 G Hz Wireless Optical Resolution: 800DPI, 1000DPI, 1200DPI Key Number: 3 Wireless Distance: 7M Roller Number: 1 Location Technique: Optical Interface Type: USB2.0 Battery Type: 1 x AA Battery, Not Included Working Current: 15m A RF carrier 2402 M Hz-2480 M Hz RF operation channel 16, aufo frequency hopping Operation Voltage 3V Net weight 46 g / 1.55 oz Size 110 x 59 x 20 mm / 4.33 x 2.32 x 0.79 inch Note: The receiver is in the battery slot Note: We provide different colors for your choice