Razer Nabu Wristband activity tracker OLED Wireless Black,Green

Nabu M/L Stay on top of everything when the Nabu notifies you of incoming calls, texts, emails, and other app alerts discreetly via the private message screen and a gentle vibration.
Sleep tracking that starts automatically the moment you fall asleep till when you wake.
The Razer Nabu is a social wearable when all it takes is a handshake to exchange social media info. The Nabu can also detect other Nabu bands in close proximity for more fun ways of connecting with others and the world around you.