Quickly switch between HI and LO modes with the flick of a switch. In HI mode, G603 delivers peak performance with LIGHTSPEED 1 ms reporting and up to 500 hours of non-stop gaming. When not gaming, simply switch to LO mode and extend battery life. LO mode reports at 8 ms for up to 18 months of use with 2 AA batteries.

Exceptional Performance and Energy Efficiency
HERO is a revolutionary new optical sensor designed by Logitech G to deliver class-leading performance and up to 10 times the power efficiency1. With HERO sensor, G603 also delivers exceptionally accurate and consistent performance across the entire DPI range, with zero smoothing, filtering or pixel rounding from 200 to 12,000 DPI.

Advanced Wireless Performance
LIGHTSPEED™ wireless technology features a super fast 1 ms report rate with our end-to-end optimized wireless solution. G603 delivers incredible responsiveness and reliability for competition-level performance.

Connect with LIGHTSPEED or Bluetooth
Dual connectivity with LIGHTSPEED™ and Bluetooth® allows you to connect to and control multiple devices. Easily toggle between the two connected devices with a press of a button.

Classic Shape with Choice of Weight and Balance
G603 is built for comfort with an ergonomically-designed, lightweight, contoured body. Customize G603 to achieve just the right weight by choosing to use either one or two batteries--with no impact to performance. You can also choose which side to place a single battery, for custom balancing.

2x Compared to Previous Generation
G603 wireless gaming mouse delivers up to 500 hours on 2 AA batteries--twice as long as our previous generation. Even with a single battery the G603 can last through up to 500 matches of League of Legends®. When battery is at 15%, both LED status indicator and Logitech Gaming Software will notify you before the critical moment.

Save your settings
With onboard memory, you can take your settings with you wherever you go. Using LGS, store your settings in G603 and play on other PCs without needing to install additional software. No login required.