Feature: 1. Accurate real-time heart rate data 2. Compatible with Bluetooth4.0 technology, wireless data transmisson 3. Work with iPhone 4S, iPhone5, iPod Touch(5th generation), the NEW iPad (3rd and 4th generation);manage and track your exercise with your iOS devices. 4. Compatible with most popular sports Apps like Wahoo Fitness, Fitcare, 60Beat, RunKeeper, MapmyRUN, Strava, MapMyRun, Endomondo, Sprots Tracker etc. 5. Ultra low power consumption, battery life will last up to 1 year with 1 CR2032 coin cell type battery.