Perfect for less than, or equal to 17cm long hands
A little side note, this mouse is well suited for small hands, it kinda annoys me that all logitech mice are. I have 20cm long hands so my fingers go over the edges and I can't grip the mouse comfortably, it took a few months to notice though and I had to stop using it. In the long run you want to be comfortable instead of aiming a bit better because the mouse is a little lighter. So if your hands are longer than 17cm I would recommend looking at the zowie EC1-B (for right handed use). Other than that: Don't worry about the battery, this mouse lasts approx 50 hours per charge and takes maybe 4 hours to charge that's just my guess from use. When it goes flat the cable is right there to plug it in and it's still good with the cable. Don't worry about the wireless latency, it's only 1ms extra compared to wired, you can't tell the difference. The no cable drag should make up for this. So yeah the mouse is pretty much perfect it's just too small for me >:(