High Quality Mouse dimensions: 116 x 63 x 32 mm Receiver dimensions: 19 x 14.2 x 6 mm Weight: 62 g Battery life: 24 months Voltage: 1.5V Current: 10-15mA Support Systems: Windows XP/7/8/10, Vista 7/8, Linux, Mac Power Source: 2 AAA Batteries (NOT INCLUDED) CPI: 800/1200/1600 Portable, perfect for travel. Can easily be put in your backpack or bag. NOTE: Nano receiver is stored in the back of the mouse. Before using the mouse, please turn the power switch ON the back of the mouse! Sensitive & silent - Quiet clicks. Stay focused while working or studying. The optical laser enables fast response, precise movements & smooth tracking. Comfortable material - Streamline design with anti-fingerprint & sweat-resistant. The sturdy rubber roller (anti-slip) ensures that your hand doesn’t slip when scrolling. Strong & anti-interference - 2.4 GHz Wireless Transmission Technology provides a powerful & reliable connection up to 10 m! Low power consumption - Enters power save mode after 10 minutes of inactivity.