- Ergonomic mouse for pain-free working at a computer and notebook ,- The ergonomic design provides perfect assistance for the intensive, everyday movements of left-handed people ,- Vertically designed mouse prevents excessive strain and pain in the shoulder and wrist ,- dpi switch for adjusting the pointer speed ,- High-resolution optical sensor ensures precise and smooth control of the mouse cursor ,- Browser buttons provide quick access to the forward/back functions in the Web browser for easy navigation ,- Rubberized surface for improved grip and comfort ,- Storable USB receiver can be transported inside the mouse to save space ,- Separate on/off switch allows for energy-saving use of the mouse ,- Provides improved comfort and ergonomics when working with the mouse thanks to a more natural posture ,- 2.4 GHz radio technology for reliable, interference-free and fast signal transmission ,- Wireless range: up to 8 metres ,- The ultra-small USB receiver is suitable for permanent installation in a notebook or PC ,- Switchable sensitivity between 1000, 1400 and 1800 dpi ,- Smart-Link technology for easy start-up ,- Especially low energy consumption , ,System Requirements: ,- Operating system: Windows 10/8/7, Mac OS 10.10 or later