This mouse is great, but for the price tag it's not worth it. There are a few annoyances with this mouse. 1. the battery seems to go down really fast shown in the software and for some reason i can't charge it past 94% with it charged over night, hopefully this is just the software bug and will be fixed latter. 2. placing the palm of your hand on the back next to the razer logo seems to creak which is annoying for the price you pay, should feel like premium plastic which it doesn't. 3. The mouse scroll also doesn't feel premium, the scroll makes to much movement like it wasn't put together quite properly and makes a clicking noise when moving it left and right. The mouse uses an optical lazer sensor I can't seem to tell the difference between my logitech g900 and the wireless lancehead, but others might disagree.
Conclusion: The mouse is good just not as premium feeling as the G900.