Features: 2.4G wireless transmission, 10m transmission distance, stable and fast. Powerful optical engine provides accurate click, quick response and stable signal. 3 adjustable DPI(1000-1600-2400DPI), easy to switch, adapt to a wide of material surfaces, accurate and reliable position, meet your daily office and gaming needs. Ergonomic design, vertical type mouse fits palm and fingers, reduces discomfort when using, bid farewell to "mouse hand". Equipped with USB receiver, plug and play, convenient to use. Specification: Brand: Model: F-17 Button number：6 Tracking system: Optical Connection mode: 2.4G wireless Effective distance: 10m DPI: 1000-1600-2400DPI Frequency: 2405MHz-2476MHz Button : 3 million times Roller : 1.2 million times Battery: 1*AA battery(not included) Working voltage/current: 3V/4mA Supported system: Windows 2000/ME/XP(64bit)//Win7/Win8/ OS X(over V10.4) Item size: 13.4 * 9.6 * 8.3cm /5.28 * 3.78 * 3.27in Item weight: Approx. 100g /3.53oz Packing list: 1 * Mouse 1 * USB receiver 1 * User manual 2.4G wireless transmission, 10m transmission distance, stable and fast. Powerful optical engine provides accurate click, quick response and stable signal. 3 adjustable DPI(1000-1600-2400DPI), easy to switch, adapt to a wide of material surfaces, accurate and reliable position, meet your daily office and gaming needs. Ergonomic design, the vertical type mouse fits the palm and fingers, reduces discomfort when using, bid farewell to the "mouse hand". Equip