Box was opened, and parts missing. The USB light speed adapter, the extra left hand side buttons and 10 gram weight. Note you need the USB adapter for the additional functionality of the mouse. This was bought on Amazon Prime

Would say this could be the best mouse ive had but after about 9 months of use the double click issue started to arise, TL;DR is save ur money

Definitely pleased with this purchase, it has helped revive my interest in Gaming. Particularly recommend if you are a Left handed Gamer

The Powerplay system is a remarkable innovation, which eliminates the need for regular charging intervals, offers virtually no latency, and packages everything in an attractive, light form factor.

Light, ergonomic, and functional; When paired with the Powerplay mat, mouse offers a truly wireless gaming experience

Expensive; Few RGB lighting options

This mouse is even better than the old ball-mice where you'd have to pop open the bottom and clean the gunk off the little rubber ball for it to work properly. Honestly though, it's incredibly smooth, perfectly weighted, the button feedback is luxurious... I would highyl recommend it to any gamer.

Worth every penny! You will never need another mouse. This one is well made.

The shape and size feel great in my hand; The optional weight is a great feature; Being able to customize the colors is cool; The tactile feel of the button clicking is perfect; Battery life is suitable for long gaming sessions

The only con I can think of is that the charging mat that would go with this mouse isn't sold in Canada; That would just be a nice added feature though; Using the wire to charge it when I'm not using it is more than good enough

Smooth and free moving and perfect for all ages

I bought this mouse upon release early last year along with the charging mat. Never needed to plug in a cord the entire time. It was rediculously responsive, easy to use and dead accurate. An awesome gaming mouse. I had not a single complaint. However, after about fifteen months of use, I started to get a double click issue on the left button, then on the right. Click and drag was useless and was impossible to use in gaming. Luckily, Logitech stand behind their stuff and offered a two year warranty. This morning, Mighty Ape offered a credit or refund (not a replacement). I have since found on other sites that the button issue is common and a problem with this model. Such a shame… I now have a charging mouse pad I can use for nothing.

I really liked the G903. Its heaviness (and optional weights), the ability to change the DPI with the middle buttons, the customisability allowing for adding/removing the side buttons and being able to set them. I found the battery life was good, too. I bought this to replace a G502 HERO that had a faulty mouse wheel, and it did well for a while. Unfortunately I noticed it started double-clicking and got worse to the point in which it wasn't usable (in and outside of gaming). MightyApe were quick to respond and provided a refund — I might pass on Logitech for a while though after several products have now failed on me early on.

I like the mouse but the older G903 got the double click issue so bought the lightspeed version. Had to download the new Logitech G-Hub software but other than that, everything went smoothly. Hope the microswitches are better quality and last longer.