Brilliant color spectrum illumination - personalize five individual lighting Zones from a spectrum of over 16. 8 million colors. Change colors to match your setup, specific games, or to showcase your favorite colors. Synchronize lighting effects with other Logitech G devices using Logitech gaming software. Low light leak around each keycap means less more light comes through the lettering – and less leaks around the keycaps. This helps make the illumination of each key more brilliant, making it easier to find your keys in the dark. Based on independent aggregated sales data (FEB ‘19 - FEB’20) of Gaming Keyboard, Mice, and PC Headset in units from: US, CA, CN, JP, KR, TW, TH, ID, DE, FR, RU, UK, SE, TR. LIGHTSPEED Wireless - Ultra-fast LIGHTSPEED Wireless technology gives you a lag-free gaming experience. G305 delivers incredible responsiveness and reliability with a super fast 1 ms report rate for competition-level performance. HERO Sensor - Next-generation HERO sensor delivers incredible performance and up to 10x the power efficiency over previous generations. HERO is an optical sensor capable of exceptional accuracy and responsiveness with 400 IPS precision and up to 12,000 DPI sensitivity.