Polar Loop 2
Tech specs 
SizeThickness: 10.8 mm
Width: 20.0 mm
Size: 145-240mm
MaterialSoft Silicone or Polyurethane (TPU) wristband
ChargingCustom Polar USB cable
Battery25 mAH Lithium-polymer battery
Battery lifeUp to 8 days
Water-resistanceUp to 20 metres
Weight38 grams
Display85 LEDs
Screen size5 X 17 Matrix
ColorsRed, Black, White, Crystal
Activity tracking 
Calories burnedYes
Heart rate
Stress & recovery
Pulse Ox
Respiration rate
UV exposure
Skin temperature
Galvanic skin response
Hydration level
Calorie intake
Running features
Swimming features
Other Inactivity alert, Vibration alerts
Non-fitness functions 
Smartphone notificationsYes
On-board music storage
Connected pay
Affiliate link*Amazon
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