Pyle Smart Foot POD Stride Sensor For iPhone 6, 6 plus 5, 5S, 5C & 4S and Android Works MapMyRun, Wahoo Strava ala coach Apps Bluetooth LE Sensor Bluetooth 4.0 - Download the App, 'APA COACH+' free via 'App Store' - Quickly and Easily Attaches to Your Shoe Wirelessly Measures Steps and Strides - Compatible with other training and fitness APPs - Learn More and Make Training Fun Foot pod/Sensor (attaches to shoe/shoelace for measuring Steps/Cadence) - For iOS Devices Only (iPhone 4S, iPhone 5, iPads) - Battery Type: CR2032 Accurate Measurement and Wireless Data Transmission - Improves Your Training and Performance Tracks Every Impact Between Your Foot and the Floor - Provides Instant Wireless Feedback and Data