The Polar H10 Heart Rate Sensor offers the best ever heart rate monitoring accuracy and connectivity.  Compatible with all Polar watches and trackers that use Bluetooth to transfer data, the H10 also works with leading fitness apps, compatible gym equipment and many other bluetooth devices.. Your Polar H10 can be securely connected to two Bluetooth training devices at the same time: such as your Polar watch + your bike computer, your favourite fitness app + gym equipment, your Polar watch + gym equipment. For even more connectivity options, your Polar H10 can be connected to ANT+ compatible gym equipment, cycling computers and other training devices. ANT+ and Bluetooth connections can also be active at the same time.. Hook up your Polar H10 with Polar Beat, the free fitness and training app from Polar, and you will get real-time heart rate information directly to your phone.  Alternatively, don’t use your phone, simply let the H10 track your training session and then transfer your heart rate data to Polar beat afterwards.. The Polar H10 comes with a soft textile Polar Pro Strap with improved electrodes to ensure your heart rate is measured accurately and without interference. The strap’s improved buckle keeps the strap securely in place during your fitness workout.. The H10 is fully waterproof to a depth of 30m and can be used in the swimming pool where heart rate data is transferred in water with 5kHz transmission. If you do not have a compatible Polar watch, you can use the Polar H10 to track your heart rate in the pool and then move your data to the Polar Beat app afterwards.. The Polar H10 keeps on improving with over the air software updates, meaning your most accurate ever Polar heart rate monitor will not become outdated.. The Polar H10 is compatible with the following Polar heart rate sensors: A300, A360, CS100, CS200, CS300, CS400, F6, F1, FS2c, FS3c, FT1, FT2, FT4, FT7, FT40, FT60, FT80, M200, M400, M430, M450, M460, (Polar App on) M600, Polar Loop, Polar Loop 2, Polar loop Crystal, Polar Move, RCX5, RS100, RS300X, RS400, V800, V650.. This heart rate monitor is available in a choice of chest strap size: XS-S or M-XXL. The XS-S option is available in black only, whereas the M-XXL option comes in a choice of vibrant colours: Black, Grey, Orange or Turquoise.