- Crazy long battery life - Small compact - Lightweight - Perfect combo for a laptop for work and gaming on the go - Adjustable sensitivity with the center button - Durable Construction

-None, Literally none. Unless you have hands like Shaq, you should probably get a bigger mouse.

-I bought this mouse in combination with my laptop for school. I used this mouse everyday for school and the battery life in this thing is incredible. Went 6 months plus before i had to change out the battery. Even then with it flashing red it lasted a week before it finally gave out. I currently use this for work at the office as i bring it with me and it's been a great mouse. The front cover opens up where you can insert the usb dongle and change out the battery. This mouse is perfect for anyone on the go who wants to do work or gaming on it. I've recommended this mouse to multiple people.

great compact mouse

no weaknesses so far

long battery life - got in November and still on same battery fit - fits my hand perfectly, large hands, claw grip smooth - moves around my desk super easily easy of use - my 4 year old has mastered using it

Battery life.

Got this mouse as a gift for Christmas and I've already gone through 3 batteries and it lags quite a bit. I'm not a full time gamer and I generally turn the mouse power off to save battery life and that barely made a dent in the power consumption. I was expecting the battery life to be in line with what is written as part of the product description but it's far from what Logitech is advertising. YMMV.