This Earphone is Bluetooth V4.0 + EDR, fully backward compatible with Most Bluetooth Version Device (V4.0, V3.0 + EDR, V2.1 + EDR,V2.0 + EDR, V1.2, V1.0 etc.). Just make sure your phone (or other Device) is Bluetooth Device.
Without retail box
For iPhone Sumsung Htc and all
Mobile phone,sports running,music