SMARTBAND RAZER NABU

OLED 128×16 single color
3-axis accelerometer
Cylindrical vibration motor
Single button for OLED screen access and other specific functions
Lithium-polymer battery with up to 6 days battery life
Rain, sweat, and splash proof. Not suitable for showering and submerging.
Charging via proprietary USB cable.
Wireless syncing with mobile devices via Bluetooth LE.
iPhone 5/5S/6/6 Plus with iOS 8 (or higher)
Android 4.3 (or higher) device with Bluetooth Lower Energy (BT 4.0 or higher).