Superstar Universal Wireless Bluetooth Headset earphone headphone For Cell phone PC iPhone 5/4s/4-US Bluetooth version: Bluetooth V3.0+EDR, compatible with Bluetooth V3.0/2.0/1.2 and V1.5 HANDSFREE/V1.1 HEADSET Transmission distance: Up to 10 Meters (about 30 inch) Suitable for all bluetooth enabled devices In ear design, noise free Allows you answer the call anytime and anywhere