ERGONOMIC DESIGN & ULTRA-DURABLE: RATEL Computer Ergonomic Wireless Mouse is made of skin-friendly silicone and plastic. Absolutely non-toxic and safe and comfortable. Super durable PC ergonomic mouse with perfect performance on 5,000,000 clicks keystroke test! Comes with a Nano receiver (stored in the back of the mouse). 3 ADJUSTABLE DPI SWITCH & PLUG AND PLAY: Our PC Wireless Ergonomic Mouse has 3-level DPI settings (800/1200/1600). Freely control the speed of your optical mouse, 6 buttons design can suit both ordinary and gaming needs. RATEL laptop ergonomic wireless mouse does not need any driver. The USB Wireless Mouse just requires a workable USB port. Only 2 steps: plug, and play. Pretty cool! UNIVERSAL COMPATIBILITY & WIDE USE: RATEL Wireless Mouse Well compatible with Windows XP, Vista, 7, 8, 8.1, 10, Linux and Mac OS (V10.4 or higher); as well as compatible for PC, Laptop, Macbook and more. Great optical computer mice for various activities! FAST & STABLE EFFICIENT TRANSMISSION: Adopted 2.4GHz wireless technology to ensure fast and stable transmission, and longer working distance. This Ergonomic PC Mouse has a high anti-interference performance with 33ft/10m transmission distance, effectively eliminates delays, dropouts, and interference. Excellent wireless mouse for both home and office. Worth to try! SUPER ENERGY SAVING & ENVIRONMENTALLY FRIENDLY: RATEL USB Mouse for computer will enter power-saving mode after 1 minute of inactivity or, will go into sleeping mode after 8 minutes of no-operation. (To wake: simply, double click any button). RATEL 24 hours stand-by professional customer service promise to give you a satisfied solution and every RATEL products with 12-Months warranty.