It is a superior 2.4G wireless mouse with high precision: 1600 dpi and 20 meter wireless operation range. It has 16 wireless working channels --- automatic frequency jumping, which can be adjusted for a better performance. Besides, intelligent power saving technology is applied to save electricity effectively and 1 * AA alkaline battery (not included) works for 2 years. Furthermore, it can be used on surface of various kinds: on desktop, mouse mat, etc. And its exquisite look is another plus point. Features: High precision: 1600 dpi, guarantee pinpoint accuracy. 2.4G wireless technology: you can use the mouse as far as 20 meters without any interference. 16 wireless working channels, automatic frequency jumping. Easy connectivity: just plug the built-in USB receiver into related devices with USB port, then the connection is done. Smart power saving: intelligent sleep mode helps it save electricity to a great extent, five times less than the common type. 2-year battery life: 1 * AA alkaline battery (not included) works for 2 years without battery replacement. Exquisite exterior: graceful shell with floral print, form an exquisite look. The USB receiver can be stored inside the mouse when not in use; no driver needed. Green fluorescence engine: it can be used on surface of various kinds: on desktop, mouse mat, etc.and at the same time ensures pinpoint accuracy. Specifications Interface: 2.4G Wireless transmission rate: 1Mbps Frequency: 2402MHz-2480MHz Channel: 16, automatic frequency jumping Power supply: 1 * AA alkaline battery (not included) Rated voltage: 1.5V Rated current: 4mA Resolution: 1600dpi Wireless transmission range: 20m Color: black, blue, redOptional Item size: 10.7 * 6.1 * 3.9cm / 4.21 * 2.4 * 1.54in (L * W * H) Item weight: 52g / 1.86oz Package size: 17.9 * 12.6 * 4.8cm / 7.05 * 4.96 * 1.89in (L * W * H) Package weight: 136g / 4.81oz