Bluetooth 4.0 Ant+ Heart Rate Monitor Chest Strap Pulse Sensor Belt. FEATURES: Tracks Heart Rate in Real-time While You Exercise Both ANT+ and Bluetooth 4.0 Capabilities Allow This Heart Rate Sensor to Connect to Both GPS Watches IPhone 5 and Later Models and Select Android Devices with Android 4.3 Operating System or Newer. The Soft Textile Chest Strap Seamlessly Adapts to Your Body Shape Bringing Full Freedom of Movement to Your Training. With Its Hook Mechanism the Transmitter is Just As Quick to Put on As It is to Take Off Compatible with Dozens of Leading Fitness Apps Including 60beat Heart Works 60 Polar Beat Runtastic Wahoo Fitness Run Keeper Mi Coach Etc SPECIFICATIONS: Works With Garmin Dakota 20 Garmin 520 Wint ANT+ (Tacx) and Wahoo (Bluetooth) Garmin Etrex 30 INCLUDES: 1* Heart Rate Sensor (Bluetooth & Ant+) 1* Fabric Chest Strap 1* User Instructions . We are an international based seller that will ship your order from abroad please at least a minimum 21 working days for delivery right now due to the ongoing delays in shipments globally.