Wahoo Fitness Key for iPod/iPhone
Brand: Wahoo Fitness
Connects your iPhone to any ANT+ fitness sensor such as heart rate monitors, cycling speed & cadence sensors and power metersCan be used to pull data from an ANT+ GPS watch, such as Garmin, into an iPhone App for easy upload to the webWirelessANT+ ultra low power technologyVery low power usage; no internal batteryCompatible with iPhone 3G, 3GS, 4, 4S, iPod touch, iPad; fits into 30-pin connector