1、2.4G wireless connection, fast and stable, up to 10m transmission distance, low latency, bid farewell to the messy cable. 2、Ergonomic design, the vertical type mouse fits the hand curve, reduces discomfort when using, bid farewell to the \"mouse hand\". 3、800/1200/1600DPI 3-gear adjustable movement speed, easy to adjust response speed. Equipped with forward/backward button, more convenient operation. 4、Powerful optical engine provides accurate click, quick response and stable signal. 5、The USB receiver is hiddened in the battery compartment, not easy to lose, plug and play. Features: 2.4G wireless connection, fast and stable, up to 10m transmission distance, low latency, bid farewell to the messy cable. Ergonomic design, the vertical type mouse fits the hand curve, reduces discomfort when using, bid farewell to the "mouse hand". 800/1200/1600DPI 3-gear adjustable DPI, easy to adjust response speed. Equipped with forward/backward button, more convenient operation. Powerful optical engine provides accurate click, quick response and stable signal. The USB receiver is hiddened in the battery compartment, not easy to lose, plug and play. Specification: Type: Vertical mouse Connection mode: 2.4G wireless Color: Black/Grey/Red(optional) DPI: 800-1200-1600DPI Key number: 6(left/right/roller wheel/forward/backward/DPI switch) Battery: 1*AA battery(not included) Item size: 11 * 8 * 4.5cm /4.33 * 3.15 * 1.77in Item weight: Approx. 76g /2.68oz Packing list: 1 * Mouse 1 * Mouse Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.