Polar OH1 optic pulse sensor black

You can use the Polar optical sensor individually for heart rate measurement or pair it with various fitness apps, sports watches and smartwatches via Bluetooth and ANT+.

Features:

• Pulse measurement using six optical LEDs
• 4 MB internal memory
• store up to 200 hours of training data
• Includes clip for attaching to swimming goggles
• constant update via WLAN
• waterproof up to 30 m
• Lithium polymer battery with 45 mAh
• up to 12 hours battery life
• charging via USB adapter
• ANT+, Bluetooth connectivity