It looks cool, feels premium, and customizability is neat. The battery last pretty long for me, and charges relatively fast.

Bad tracking on any surface that isn't 100% perfectly uniform, and blessed by the Pope himself. Both mouse buttons are intermittent out of the box.

For the price that I paid for it which at the time was brand new and not on sale, this mouse blew my mind on how you could spend several hundred dollars on a MOUSE, and still get a garbage product. DO NOT BUY ANY OF THESE POWERPLAY MICE.

The Lightspeed concept really delivers for a wireless gaming mouse. Battery life is good and charges fast. Can use it while charging. Braided cable. DPI switches. Accurate. Slides nicely. Good weight.

Proprietary wireless charging (not Qi). Scroll sometimes middle clicks. Left click button wore out after 3 months. 3 months. 3.

Sorry Logitech, but for this much money I expected it would last a lot longer than it did.

Battery life Light weight Somewhat ergonomic

I thought coming from a g700 and going to this that the weight, or rather lack of it, would be an issue for me with the g903. That is not the case, now I can not go back to a heavy mouse again. This does come with a 5g weight you can put in at the bottom if you would like. The battery life on this mouse is amazing, I just charged it after a month of use month and a week to be exact. After experiencing having to charge my old g700 after each gaming session this battery life is a nice treat. Those hero sensors are really efficient. You might get more out of yours, maybe less, depends on your usage. I use it for gaming and work, so about say 7 hours average daily use. My other concern was that this mouse may be too small for my large hands. That is not the case. It is a good medium size that should fit both smaller and larger hands. Like all other logitech mice this has ergonomics, my hand falls off the mouse on a curve. This is largely why I only use logitech mice, it's their ergonoimics. Initially I thought that this mouse felt flimsy and light. Well that is also not the case, I have abused it a couple times and it feels like it will stand up to the test of time and use. Hopefully it will last 10 years like my last logitech mouse, you get what you pay for.

Wireless / Wired Option LED RGB options Slight weight adjustable Can swap button figuration for Left and Right handedness Static and Free scroll wheel options Battery level indicator Quick DPS switches Nice large size in length

Web page Forward button on the side is a little to far forward on the mouse buttons could be smaller or I just have short thumbs? After about a year or so of daily heavy use Left and Right mouse button now Double click from time to time which is super annoying.

Its a nice mouse easy to customize but with the Double click problem its super annoying when playing games or using web pages. I don't think its worth the price due too this problem which if you look online is a common feature in Logitech mice lately? AND with Canada blocking the wireless charging mouse pad (PowerPlay) its missing one of the cool gimmicks that is usually advertised. So yeah its good but not perfect.