Misfit Ray
Tech specs 
Size12mm diameter, 38mm length
MaterialRay: Anodized aircraft-grade aluminum
Sport Band: TPU
ChargingNo
BatteryThree 393 button cells
Battery lifeUp to 6 months
Water-resistanceUp to 50 metres
Weight8 grams
Sensor3-axis accelerometer
DisplayLED
Screen size
ColorsCarbon Black, Rose Gold
Other
Activity tracking 
StepsYes
DistanceYes
CaloriesYes
ActivityYes
Floors
SleepYes
Heart rate
Vo2Max
Stress & recovery
UV exposure
Skin temperature
Galvanic skin response
GPS
Running features
Swimming features
Smartphone notificationsVibration Alerts for alarms, calls, texts, and movement reminders
Other Vibration alarm
Links 
Affiliate link*Amazon | Misfit | Target | eBay
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