ELECOM EX-G Pro Trackball Mouse, Wired, Wireless, Bluetooth, 3 Types Connectio..

3 Way Connection : Wired/Wireless/Bluetooth ELECOM Mouse Assistance software Support Windows 7, Windows 8.1, Windows RT8.1, Windows 10 or later, macOS 10.13 or later DPI: 500/1000/1500 count 8 Buttons with Tilt Wheel Low Energy Mode / High Speed Mode Size: W4.3"(108mm) X L5.3"(135mm) X H1.9"(47.7mm) Weight: 147g/ 5.2oz The attached battery is for checking initial operation. It may be consumed faster than the new batteries, but this is not a malfunction of the mouse itself.