Brand NEW! 2.4 GHz RF wireless technology with on/off switch - This mouse works at any angle with a range of up to 30 ft. With No wires to get tangled. The on/off switch helps conserve battery power plus the low battery indicator helps you know when it is time to change batteries. Programmable driver - adjust and customize your iMouse E30 to your liking TO enhance your gaming experience with the included programmable driver. Easy to install, and navigate through, within the driver menu, adjust anything from mouse colors, to Blinking speed, to assigning commands (macros), extending your DPI speed up to 4800 DPI, and reprogramming buttons with a few simple steps. Ergonomic vertical design - Our vertical ergonomic design helps you achieve a more natural grip, better support, and natural wrist position. With our sleek design and added support, The Adesso Vertical ergonomic iMouse E30 is perfect for long hours of use. Adjustable 3 level DPI switch (800/ 1600/ 2400) - attain higher precision and better accuracy with your choice of 3 dpi levels. Easily switch from three different DPI levels which change color depending on the level chosen. From 800 (Green), 1600 (Blue) and 2400 (Red) the easily-accessible DPI button lets you quickly switch between the various computer tasks you partake throughout the day. - All international buyers are responsible for all tax, duties and/or customs fees.