This wireless vertical and optical mouse, with ergonomic design, offers you comfortable hand feeling, easing your wrist and cervical spine pain, providing longlasting comfort. 3-level adjustable CPI offers faster movement and higher precision, designed with a wheel for turning page during PPT presentations in business or teaching. Features: With ergonomic design, this professional gaming mouse fits your hand perfectly and relieves your discomfort. Because of its 10-meters (32.81FT) wireless range and compact size, it is convenient for you to use it in the living room lying on the bed or sitting in sofa or even in narrow space. High precise optical engine, smooth tracking, precise positioning,and effective response, and it is beneficial for PPT presentation in business or teaching. Plug and Play! It means your don't have to install any software! 3-level adjustable CPI offers faster movement and higher precision. Compatible with: Windows7/8/Vista/XP/2000, Android, Linux, Mac OS. Battery: 1 x AAA (Battery Not Included). Specifications: Button: 4 Frequency: 2402MHz-2480MHz Rated Voltage: 3V Rated Current: 15mA CPI: 3-Level adjustable, 800/1200/1600 CPI Type: Wireless Wireless Range: Within 10m / 32.81FT Item Weight: 29g / 1.02oz Package Weight: 59g / 2.08oz Item Size: 14.2 * 1.9 * 1cm / 5.59 * 0.75 * 0.39in L * W * H Package Size: 19 * 11.5 * 3.4cm / 7.48 * 4.52 * 1.34in L * W * H) Package List: 1 * Touch Pen Mouse 1 * USB Receiver 1 * Pen Stand 1 * User Manual 1* Micro to USB Adapter 1* Type-C to USB Adapter