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Polar Chest Straps sold as Each. Fits chest sizes 23″ to 47″

Size: Medium
Compatibility: Polar T31 Wireless Transmitter

A Polar wireless sensor measuring cycling speed and distance via magnet(included) rotating on the front wheel. Includes bar mount. Also called a Second bike kit.

Heart rate and GPS enabled multisport training device for ambitious triathletes, runners and endurance athletes
Combines training load with 24/7 activity data for true recovery status; Tracks route, distance, speed/pace and altitude (via barometric altimeter)
14 hour rechargeable battery life in training mode, 50h in GPS low power mode; Scratch-resistant Gorilla Glass lens, waterproof to 100 ft.

Heart rate and GPS enabled multisport training device for ambitious triathletes, runners and endurance athletes
Combines training load with 24/7 activity data for true recovery status; Tracks route; distance; speed/pace and altitude (via barometric altimeter)
14 hour rechargeable battery life in training mode, 50h in GPS low power mode; Scratch-resistant Gorilla Glass lens, waterproof to 100 ft.

easures every training session and 24/7 daily activity, Helps you understand your training load and recovery need, Tracks your speed, distance and route with integrated GPS,Fully customizable sport profiles to get the most out of your training, Supports triathlon training with transition times
Gives heart rate even in water with a comfortable dual-mode transmitter, Allows you to plan and analyze your training with the free Polar Flow app and web service
Compatible with Polar Bluetooth® Smart running and cycling sensors, Waterproof to 30 m/100 ft

Provides heart rate information to compatible mobile training applications such as Endomondo, RunKeeper, SportyPal, CardioTrainer, Runtastic, Run.GPS, Sportstracklive, IdoMove
Uses Bluetooth transmission, ensuring that the mobile device finds your heart rate signal
Washable fabric strap

Provides heart rate information to nikeplus.com web service with compatible Nike+ devices, 5th generation and above iPods and the iPod nano
Uses coded 5 kHz transmission, ensuring that your Polar training computer finds your heart rate signal
Washable fabric strap

Soft, comfortable HRM transmitter with electrodes, engineered right into the fabric
Compatible with all Polar Heart Rate Monitors
Coded to eliminate interference from other HRMs

Newest Design with Hook and Loop Closure Strap Only …does not include Snap On Transmitter
Comfortable soft Cloth Fabric Transmitter Strap only
Fits sizes from 38-45 inches , adjusts

Improve your fitness with this easy-to-use monitor.
Features average and max heart rate, age-based target zone, visual/audible alarm in target zones, and calorie expenditure.
Dual time zone, time/date/alarm, 8 languages, and comfortable heart rate strap.

Easy to use intuitive keypad programming and functions
12/24-hour clock
Magnetically mountable, freestanding, or hanging from 36-inch strap