Samsung Charm
Tech specs 
Size18.2 x 18.2 x 6.5mm
MaterialRubber
ChargingUSB
Battery17mAh battery
Battery lifeup to 14 days
Water-resistance
Weight3 grams (core unit)
SensorAccelerometer
DisplayLED lights
Screen size
ColorsGold, Black and Rose Quartz
OtherCompatible with smartphones running on Android OS 4.4
Activity tracking 
StepsYes
DistanceYes
CaloriesYes
ActivityNo
FloorsNo
SleepYes
Heart rateNo
Vo2MaxNo
UV exposureNo
Skin temperatureNo
Galvanic skin responseNo
GPSNo
Running featuresNo
Swimming featuresNo
Smartphone notificationsCalls, txt, third party apps
Other
Links 
View onAmazon
Amazon US rating3.3 out of 5 stars
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