Supershop&reg; Bluetooth 4.0 Smart Heart Rate Monitor for Samsung Galaxy S4, Galaxy S5, Note 3, Nexus 4 , Nexus 5 , Nexus 7, Moto X, Moto Q, Motorola Droid RAZR MAXX and Other Android Devices Using OS 4.3 or Later Suitable Worn Around Chest, Made Of Soft Fabric Bluetooth Smart technology providing ECG-accurate heart rate to any Bluetooth Smart ready device utilizing standard heart rate profile Wirelessly transmits your Heart Rate to your Compatible Device for instant Feedback Compatible with iPhone 4S, iPhone 5, iPod touch (5th generation), iPad (3rd & 4th generation), iPad mini and iPod Nano (7th generation)Samsung Galaxy S4, Galaxy S5, Note 3, Nexus 4 , Nexus 5 , Nexus 7, Moto X, Moto Q, Motorola Droid RAZR MAXX and Other Android Devices Using OS 4.3 or Later