Razer Huntsman Mini - Mercury Edition - 60% Optical Gaming Keyboard (Linear Red Switch) - FRML Packaging ( En )Faster Than Traditional Mechanical Switches Razer Linear Optical switch technology uses optical beam based actuation, registering key presses at the speed of light with a 1. 0 mm actuation distance (15 30% shorter than other linear switches). Ultimate Personalization & Gaming Immersion with Razer Chroma Fully syncs with popular games, Razer hardware, Philips Hue, and gear from 30+ partners, supporting 16. 8 million colors on individually backlit keys.