Multi-Mode Wireless Connection Intererance-free wireless options: The smart switch between Bluetooth 5.0 and 2.4 GHz ensures stable wireless transmissions with up to 10 meters range and 360° coverage. You can still use your mouse regardless of USB port shortage or the loss of reciever. Verticle Ergonomic Design Enjoy superior comfort: whether you already have wrist strain and pain complaints, or you are simply looking to upgrade your working enviroment with a superior tool, EV310M is a reliable choice. its fully ergonomic and vertical shape also contributes to better posture while sitting for longer. Adjustable 2400 DPI HD Sensor Precise down to the last pixel: with the adjustable DPI sensor, accuracy is no longer left to chance Adjustable from 800 up to 2400 DPI, you can adapt it to match your preferance. Up To 9 Months Battery Life Low energy consumption: Rapoo’s energy-saving technologies, combined with the on/off switch, means you can use this mouse continuously for up to 9 months. Device Specifications:

• Colors – Black
• Product Dimension(L*W*H) – 124.5*81*76mm
• Product Weight – 110g
• DPI Sensitivity – 800/1000/1200/1600/2400
• Number of Buttons – 7
• Ergonomic Mice Design – Yes
• Scroll Wheel Direction – Two-way
• Max Tracking Speed(inch/s) – 300 inch/s
• Max Acceleration (G) – 10G
• Hand Size – Large
• Hand Preference – Right
• Nano USB Receiver – Yes
• Battery Capacity – 1 AA alkaline battery
• Battery Life – 9 months
• System Requirements – Windows® XP/ Vista/7/8/10, USB port