Chest straps are a thing of the past the future is optical. The Scosche Rhythm+ Heart Rate Monitor Armband fits discreetly around your lower arm. It can connect to your devices via both Bluetooth and Ant+ which means it works with over 200 Applications including Strava and MapMyFitness.

ACCURACY OF SENSORS
The Rhythm+ employs PerformTek™ Precision Biometrics which is sensor technology that continuously measures real-time biometric data to give highly accurate monitoring and measurement. 

Lots of optical HR monitors fall short when it comes to measuring the spikes you can get in your heart rate when you are cross training.  Obviously the Rhythm+ measures accurately for running and cycling but because it takes so many readings per second it also works well for activities like Weight Lifting, Rowing, Skipping, Burpees to name but a few.

100 FT. RANGE
It means you can be away from your device like when you are using your Turbo trainer and it still works the same.

8 HOUR BATTERY LIFE
A generous battery allowance will keep you working for up to 8 hours continuously, then simply plug it in with the charging cable (included) to recharge the Rhythm+ for your next use.

SENSOR WORKS ON ALL SKIN TYPES
The sensor uses both green and red sensor lights to ensure it works well with all skin tones.

RUGGED DESIGN
It has an IPX rating of IP67 which means it is sweat-proof and waterproof and can be submerged up to 1 metre.