Feature: 1. Powerful optical engine provides accurate click, quick response and stable signal. 2. 2.4G wireless technology provides fast and stable transmission in 10 meters, low latency. 3. Ergonomic design, the vertical type mouse fits the palm and fingers, reduces discomfort when using, bid farewell to the \"mouse hand\". 4. 3-gear adjustable movement speed(800-1600-2400DPI), easy to switch, adapt to a wide range of material surfaces, accurate and reliable position. 5. Built-in 600mAh rechargeable lithium battery, low power consumption, long endurance time. Specification: Features: Powerful optical engine provides accurate click, quick response and stable signal. 2.4G wireless technology provides fast and stable transmission in 10 meters, low latency. Ergonomic design, the vertical type mouse fits the palm and fingers, reduces discomfort when using, bid farewell to the "mouse hand". 3-gear adjustable DPI(800-1600-2400DPI), easy to switch, adapt to a wide range of material surfaces, accurate and reliable position. Built-in 600mAh rechargeable lithium battery, low power consumption, long endurance time. Specification: Type: Wireless vertical mouse Color: Black/Grey(optional) Material: ABS Button number: 6(include the roller wheel) Connection mode: 2.4G wireless Transmission distance: up to 10m(barrier-free) DPI level: 800/1600/2400DPI Button life : 5 million times Battery capacity: 600mAh Cable length: About 70cm Voltage/Current: 3.7V/10mA Item size: 10.5 * 7.7 * 6.2cm /4.13 * 3.03 * 2.44in Item weight: Approx. 93g /3.28oz Packing list: 1 * Mouse 1 * Charging cable 1 * User manual Package List: 1 * Mouse 1 * Charging cable 1 * User manual