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
Activity
Floors
SleepYes
Heart rate
Vo2Max
Stress & recovery
UV exposure
Skin temperature
Galvanic skin response
GPS
Running features
Swimming features
Smartphone notificationsCalls, txt, third party apps
Other
Links 
Affiliate link*Amazon | Samsung
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