The Razer Nabu X offers a no-screen, no-fuss notification interface, meaning you keep your head up and in the game at all times. It simply vibrates when you get an incoming alert from your phone, and the LEDs light up in customizable colors. All tracked by Nabu X’s accelerometer and algorithms, with progress displayed on the companion fitness app of your choice.Nabu X is a social wearable, outfitted with Razer’s proprietary Pulse technology to allow Nabu and Nabu X bands to “talk” to each other in a specified proximity. This creates fun, new ways of connecting with others and interacting with the world around you.