Garmin Forerunner 630
Tech specs 
Size45.0 x 45.0 x 11.7 mm
MaterialPlastic with silicon band
ChargingYes
Batterylithium-ion
Battery life16 Hours training, 4 weeks watch + AT + notifications
Water-resistance5 ATM
Weight44 grams
SensorAccelerometer, optical heart rate sensor, GPS
Displaycolor touch screen - 215 x 180 pixels
Screen size31.1 mm diameter
ColorsBlack/Gray, Frost Blue, Marsala
OtherPLATFORM: Proprietary OS
PROCESSOR: N/A
MEMORY: 200 hours of activity data
CONNECTIVITY: Bluetooth Smart, Ant+, Wi-Fi
Activity tracking 
StepsYes
DistanceYes
CaloriesYes
ActivityYes
Floors
SleepYes
Heart rate24/7
Vo2MaxYes
Stress & recovery
UV exposure
Skin temperature
Galvanic skin response
GPSGPS and GLONASS enabled
Running featuresVO2 max estimate, recovery advisor, race predictor, running dynamics, calculates distance for indoor workouts, personal records, virtual partner/racer
Swimming features
Smartphone notificationsYes
Other - Features physiological measurements (stress score, performance condition and lactate threshold)
- Music control, Fine my phone
- Remembers 200 hours of activity data
Links 
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Amazon US rating4.0 out of 5 stars
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