Polar Heart Rate Monitor Elastic Replacement Transmitter Strap for T31 or T61 (Size Small 28-40 Inches)

Indiglo Night-Light
Target Heart Rate Zones including Time in Zone
Calories Burned and Percentage of Max Heart Display

Accurate Heart Rate measurement on your iPhone without awkward adapters
Works with your ANT+ displays such as Garmin, adidas and Timex
See all of your ANT+ sensors (Foot Pod, Bike Speed/Cadence, Power) in real time on your iPhone with free 4iiii App or Popular iOS fitness Apps

Provides live, accurate heart rate to compatible mobile training apps, including Polar Beat
Uses Bluetooth Smart technology providing ECG-accurate heart rate to any Bluetooth Smart ready device utilizing standard heart rate profile
Compatible with iPhone 4S, iPhone 5, iPod touch (5th generation), iPad (3rd & 4th generation), iPad mini and iPod Nano (7th generation)

Advanced athletic training device lets you track intensity of training, continually meet fitness goals, and ultimately lose weight
Included proprietary Timex Personal Trainer heart rate monitor provides fitness management data in an intuitive, user-friendly watch
Analog heart rate sensor can communicate with fitness equipment, meaning you can view BPM on treadmill, stationary bike, or similar