The G602 is a Logitech classic that was launched back close to the launch of the original G502. What really set it apart was its use of a traditional battery, not a rechargeable wireless setup for what our friend Ed over at Sapphire would call a “True Wireless” setup. The G602 had an extremely long battery life and it was the only mouse in the post G502 age at Logitech with more than the standard two side buttons. Funny enough the G602 was replaced with the G603 but it dropped the extra side buttons and went with a different shape so it was a little bit of a surprise to see Logitech switch back to the features of the G602 when I had a call with them about the new G604. It gains the Hero 16K sensor of course and drops some weight. Today I’m going to check out the new mouse and see what it’s all about.