Mio Alpha 2
Tech specs 
SizeYellow/Black 252 x 43 x 18 mm (lxwxh)
Punch Pink: 223 x 43 x 18 mm (lxwxh)
MaterialSoft silicone
ChargingUSB
BatteryLi-poly battery
Battery lifeApproximately 20-24 hours in workout mode
Up to 3 months without continuous heart rate monitoring on
Water-resistance30 metres (3 ATM)
Weight53 grams
SensorOptical heart rate, 3-axis accelerometer
DisplayHeart rate zone LED indicator + mineral glass LED
Screen size
ColorsBlack, Black/Yellow, Punch
Other
Activity tracking 
StepsYes
DistanceYes
CaloriesYes
Activity
Floors
Sleep
Heart rateEKG-accurate
Vo2Max
Stress & recovery
UV exposure
Skin temperature
Galvanic skin response
GPS
Running features
Swimming features
Smartphone notifications
Other - Clock, Countdown & Repeat Timers, sound alerts, calories, distance, and pace, while in workout mode
- Compatible with PAI in workout mode
Links 
View onAmazon | eBay
Amazon US rating3.5 out of 5 stars
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