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
Hydration level
Calorie intake
GPS
Running features
Swimming features
Other
Non-fitness functions 
Smartphone notifications
On-board music storage
Connected pay
Links 
Affiliate link*Amazon
Read moreArticle
*Disclosure: We are a professional review site that receives a small commission from sales of certain items, but the price is the same for you. See our affiliate disclosure page for more details.
**All tech specs and images on this page come from manufacturers. These may change over time as manufacturers sometimes update their devices. While we cannot guarantee absolute accuracy of information on this page, we promise to review this content regularly and do our best to bring you the most up-to-date information. To be absolutely sure of tech specs of a particular device, we recommend checking the manufacturer’s website.