WIRELESS CONNECTIVITY: Wireless 2. 4 GHz ergonomic mouse especially for small hands. Mouse Dimension: 105x67x58 mm. 6 button design. Wireless 2. 4GHz technology with 10 meter operating range ERGONOMIC DESIGN: Encourages natural handshake position while using to prevent repetitive strain injury or reduces muscular strain HIGH ACCURACY: Optical sensor and built-in DPI switch button; You can switch DPI between 800/1200/1600; Plug-and-play mouse with nano USB receiver SILENT-CLICK BUTTONS: Click without the annoying click; suitable for public places that require silence and work without distractions SYSTEM REQUIREMENTS: Windows 7, 8, and 10; Package includes: 1 PERIMICE-719, receiver, 12-month limited WIRELESS CONNECTIVITY: Wireless 2. 4 GHz ergonomic mouse especially for small hands. Mouse Dimension: 105x67x58 mm. 6 button design. Wireless 2. 4GHz technology with 10 meter operating range Note: In case of Wireless mouse, the USB receiver will be provided inside or along w