This wireless vertical mouse adopts various DPI of 800/1200/1400/1600DPI to offer a fast response without delay and makes it suitable for different situations, and comes with 2.4GHz anti-interference transmission to make sure no missing order. And ergonomic vertical design fits wrist line, offers a very comfortable feeling. Features: Comfortable Grasp - Ergonomic vertical design gives a comfortable grasp. No fatigue or pain after long time gaming. 800/1200/1400/1600DPI - Adopting various DPI of 800/1200/1400/1600DPI to achieve fast response with no delay and makes it suitable for different situations. 2.4GHz Wireless Technology - 2.4GHz wireless technology makes sure a stable and smooth operation with no interference. 10m Wireless Connection - The wireless optical mouse works normally within 10 meters from the computer. 7-15 Days Working - A built-in rechargeable 400mAh battery enables this 2.4GHz Vertical Mouse to work for 7-15 days continuously. Specifications: Product type: 2.4GHz Wireless Vertical Mouse Material: ABS Plug and play: Yes Working mode: Optical DPI: 800/1200/1400/1600DPI Working mode: Optical Click life: 5 million times Wireless distance: 10 meters Wireless technology: 2.4GHz Charging time: about 3 hours Working time: 7-15 days Battery capacity: Built-in 400mAh battery Supported OS: For Windows XP/7/8/Android systems Color: Black, white, red, purple, blue for your choice Package size: approx. 12.5 * 9 * 7.5 cm/ 4.9 * 3.5 * 3.0 in Package weight: 130g/ 4.6oz Package List: 1 * 2.4GHz Wireless Vertical Mouse 1 * Receiver 1 * Data Cable 1 * User Manual 1、Comfortable Grasp - Ergonomic vertical design gives a comfortable grasp. No fatigue or pain after long time gaming. 2、800/1200/1400/1600DPI - Adopting various DPI of 800/1200/1400/1600DPI to achieve fast response with no delay and makes it suitable for different situations. 3、2.4GHz Wireless Technology - 2.4GHz wireless technology makes sure a stable and smooth operation with no interference. 4、10m Wireless Connection - The wireless optical mouse works normally within 10 meters from the computer. 5、7-15 Days Working - A built-in rechargeable 400mAh battery enables this 2.4GHz Vertical Mouse to work for 7-15 days continuously.