This product is a sensor type heart rate monitor that will detcect heart rate and send heart rate data to the Smartphone.

Download Ftbeat at Google play store for your Droid, you can set your zones based on your age,max heart rate.

Connect the receiver to smart phone by 3.5 phone jack, the transmitter sill continuously transmit the continuous heart rate data to your smart phone. The application will caculate the heart rate and determines the specific zone, and also feedback total time and time in each heart rate zone to you. 

History record is available for the latest *0 days.

This product is compatible with many popular APPs,  like *0beat, you can use it for your iPhone and your Droid.Heart rate receiver will allow ear phones to be inserted for music.