Razer Nabu
Tech specs 
Size81.0mm L × 63.4mm H × 13.6mm W (Medium - Large), 75.3mm L × 59.1mm H × 13.6mm W (Small - Medium)
MaterialBand made with thermoplastic rubber
ChargingMini USB
BatteryLithium-polymer battery
Battery lifeUp to 7 days
Water-resistanceIP54 water resistan
Weight
SensorAccelerometer, Cylindrical vibration motor
DisplayOLED
Screen size128 x 32 pixel
ColorsBlack
Other
Activity tracking 
StepsYes
DistanceYes
CaloriesYes
Activity
Floors
SleepYes
Heart rate
Vo2Max
Stress & recovery
UV exposure
Skin temperature
Galvanic skin response
GPS
Running features
Swimming features
Smartphone notifications
Other
Links 
View onAmazon
Amazon US rating2.6 out of 5 stars
Read moreArticle