Sona
Tech specs 
Size43mm x 22.5mm x 12.7mm (H x W x D)
MaterialFull grain leather band and custom milled metal hardware.
ChargingMagnetic charging cable
Battery80 mAh Lithium Polymer battery
Battery lifeUp to 4 days
Water-resistanceSplash-proof
Weight
SensorNext generation photoplethysmography (PGG) heart rate sensor, 3-axis accelerometer, Vibrating motor
Display
Screen size
ColorsRose gold with white leather, gunmetal with black leather, and gold with black leather.
Other
Activity tracking 
StepsYes
DistanceYes
CaloriesYes
ActivityYes
Floors
Sleep
Heart rateYes. Including Heart Rate Variability.
Vo2Max
UV exposure
Skin temperature
Galvanic skin response
GPS
Running features
Swimming features
Smartphone notificationsYes
Other Tracks your daily Resonance goals and progress
Links 
View onCaeden
Amazon US rating
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