Comfortable and decent build quality.

Very good build quality and no lag.

Wound up buying a second one of these, its a little on the big side for my hands but otherwise has a nice quality feel to it.

Good quality!

Good quality wireless mouse

Excellent responsiveness, and overall quality.

i love the comfortable design and quality, punches above its weight for this price point

Good quality feelingCons:side buttons are a bit confusing to distinguish, but you get used to itWould recommend at the price I have payed ($38 USD)

good quality and long battery life

Mouse seems like it's good quality but this lag is just to ridiculous

There quality is really shoddy and the warranty support is slow to respond

Sturdy and good quality.

best price, best quality

Its accurate its made of good quality components...

The build quality is phenomenal

Budget friendly, good quality.

Good quality, great satisfaction.

I am going to be miserable if my peripherals are not absolutely perfect and the best quality

Great mouse with good build quality

Great gaming mouse, excellent quality.

You can program the mouse to do a lot of things and the quality is good

Good quality and price

There's no reason that should ever happen with a quality product unless (1) it's defective which bad eggs can fall through the cracks, I get it or (2) poor quality control either on Logitech's part of the manufacture's part if they outsource is (which they do unless they own a plant in China)

Top quality mouse,looks good, feels good.great features

Quality sleek mouse in a world of flashy garbage ones

Great quality

I love the idea of this mouse, but the programmable buttons are terrible quality.

It feels like it is good quality and the battery has not been replaced since I bought it back in December

Clicks felt sturdy, sensor seemed accurate, and just feels like the build quality is overall solid.

Only real complaint besides the somewhat cheap build quality, is it's lack of extension for your pinky/pink rest

This mouse feels really good in the hand, and has an excellent build quality

Seems quality though, so I wouldn't worry

The quality of the mouse is superb

The quality is excellent and it fits my hand very well

Overall good quality and value for the price and a normal user would not notice the

Another top quality mouse from Logitech

I was getting 4-5 weeks, I'm using the best quality copper top battery

The build quality is excellent and the design is extremely functional for gaming.

It's comfortable, has a decent amount of keybinding buttons, and feels like great quality

Good quality product

biggest aggravation is the build quality

It fits in my hand really well, great form factor and quality

Save yourself the trouble and buy a different, more reliable mouse, as this one doesn't live up to Logitech's reputation for putting out quality reliable products

I don't notice any lag from it being wireless and the build quality is solid.

Plastic quality is clearly worse than first one, you can easily see abrasion in photos

Pretty sweet mouse, has good build quality to it that you would expect from a Logitech product and the price really wasnt bad.

Solid build quality.

It saves the hassle of turning the mouse on and off!You get what you pay for, and paying for better quality and reliability is totally worth it down the road

Great feel and good build quality, BUT

no way to know long term but initial quality is good.

Good quality

Great product, very good built quality, good weight, amazing look and feel...

This is a great wireless mouse for personal (home or office) use, as well as on the go.

Works as it should, comes with Duracell's, and they are still lasting even after I have forgoten to shut the mouse off for days in a row

Very comfortable, the G-keys are easy to reach and they have become very handy for gaming as well as for productivity!Speaking of gaming, this mouse will be sufficient for about 90% of PC gamers, It really was an improvement in comfort and fit over my previous mouse, and at sale price of $39.99, it was even better

I can't complain as it's lasted long enough to wear the two primary mouse buttons smooth

, very nice ergonomic feeling in your hand/palm, sturdy (I have dropped it many times from varying heights and nothing has ever broken on it), can be very battery friendly (on ECO mode), can be incredibly accurate (in Professional mode, for gaming), overall a very nice mouse and again at $35 it is a steal.

Like I sad, not a big deal, but not sure why that isn't a thing

n’t like, have to go online to get information about programming buttons

n’t feel good plus you’ll accidentally press some of the side buttons