With POWERPLAY and LIGHTSPEED technology, Logitech G has solved the barriers to high performance wireless gaming. Input lag, wireless disconnects, and dead batteries are now a thing of the past. Welcome to the future of wireless PC gaming, achieved through advanced science and unrivaled engineering.The POWERPLAY energy field is transformed into charging current by the POWERCORE module, which attaches magnetically to compatible wireless gaming mice. The beauty of POWERPLAY is that your mouse will charge while you're at play and at rest. We've made it that simple. It just stays charged.