S: 125-170 mm M/L: 140-200 mm
Polar Sleep Plus automatically tracks your sleep and gives you valuable insights to your night. Your Polar tracker monitors your movements with a built-in 3D accelerometer — it automatically detects when you fall asleep and when you wake up. Polar’s precise sleep metrics provide a detailed overview of your sleep every night.
Continuous heart rate tracking with Polar is dynamic, intelligent and optimized. It takes advantage of Polar’s proprietary optical heart rate solution that measures your heart rate with the help of LED lights and a light-detecting photodiode. The LED’s shine green light on the skin, and the photodiode measures the intensity of the light reflecting back. Polar’s scientifically developed algorithm translates this data into heart rate readings.
DYNAMIC HEART RATE TRACKING
The intelligent technology checks your heart rate at regular short intervals. It detects if your heart rate is high and automatically records it until your heart rate goes down.
When your arm is moving and the accelerometer on your Polar product detects a high activity level, heart rate recording will start automatically.
LOWEST HEART RATE
When you haven’t been moving for a while, your Polar product automatically starts to record heart rate to look for the lowest heart rate of the day. For the lowest heart rate of the night, your heart rate is checked at regular short intervals during your sleep.
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