Logitech G604 LIGHTSPEED Wireless Gaming Mouse, HERO 25K Sensor, 25,600 DPI, 15 Programmable Controls, Up to 240-Hour Battery Life, Dual Wireless Connectivity Modes, PC/Mac - Black

This mouse is almost perfect - Logitech actually managed to improve on the previous generation G604, which was already excellent.The connection to the receiver is strong (I have the dongle plugged into the front of my PC). I've not suffered a single drop-out and the mouse remains responsive at all times.The good bits:+ The primary buttons click positively with no excessive travel or missed clicks.+ The side buttons are responsive and all accessible with the ball of your thumb.+ The precision scroll wheel works well and is not accidentally set off when gaming.+ The mouse feet don't suffer from too much friction.+ The programmable buttons mean you don't have to redefine your keys in your games; you just leave them and program the mouse.+ Per-program profiles are great for productivity, media work and gaming. These can be shortcuts, macros, sensitivity switches. The profiling software, G Hub, really is very useful.The bad bits- The G Hub software is a bit janky. If you alt-tab out of a game, the software quite often does not detect the game in full-screen again. As profiles switch based on the active program, this can be problematic. Ctrl+W closes tabs in Firefox and can be mapped to a button on the G604. If you alt-tab out of, say Battlefield V and into Firefox and back, G Hub doesn't always detect that you've alt-tabbed back. Hitting what you thought was the key to select your rocket launcher (3) will actually trigger Ctrl+W (the same button on the Firefox profile) and close the game. I have a Logitech keyboard with programmable RGB, so I can see when the profile is incorrect, so this isn't a big problem. If you only have the mouse, however, there is no RGB so you can't see which profile is active.- The G Hub workflow to associate games with profiles and to set up your profile actions and assignments isn't very intuitive.- G Hub tries to connect to other apps on your machine, such as Discord, without telling you how to turn it off.- The mouse-wheel left/right buttons are easy to trigger if you use the mouse-wheel-click. For instance, I use wheel-click in games for melee attacks. I can't have the left/right wheel clicks mapped because meleeing might trigger them.- The battery life is good, but not great. Batteries in the original G604 lasted longer than the lifetime of the universe. They only last about 4 months in this iteration when set to gaming mode (1,000Hz report rate).

The Logitech G602 was already an incredible mouse, so good I've been using it for about 4 years and only ever bought replacements of itself over time. If you've used a G602 before you'll know what to expect and how Logitech wireless mice are amazing. For those that haven't, they are almost faultless mice with long lasting batteries, zero connectivity drop, accurate precision and feels great in the hand (I have medium/above average sized hands for a male).So, how does the Logitech G604 improve over the G602?- More robust materials/build. Feels like a more solid plastic that could take a number of minor impacts without issue.- Scroll wheel is much easier to grip with its new design and allows better tilting from side to side.- There's a scroll wheel lock/unlock now that allows for uncontrolled scrolling or fixed rate scrolling.- The side buttons have seen a major improvement. On the G602 some of the side buttons felt awkward to reach or clumped together that could lead to the wrong clicks but the G604 have separated them and revamped the design.- Using only one battery for a longer charge than the G602, the G604 weighs less and just glides effortlessly across the surface.- There's a new software suite by Logitech that allows a lot of customization in an easy to use program.I couldn't come up with any disadvantages of this mouse over the G602. It really does feel like an upgrade and I'm looking forward to using it over the oncoming years. The one way I wish this mouse could be upgraded further is adding in lighting to the buttons and possibly RGB features. In its current state the mouse is very dark and I feel it almost might get lost in a dark room. It'd be nice if they added RGB as an optional feature with the ability to disable the lighting if that's not your thing.By the way, I bought the 'East European' variant of this mouse and it came in a multi-lingual packaging with English as the primary text so don't worry if you thought the East European version was inferior in some way.Great mouse all around, highly recommended.East