Item specifics? Style:Ear Hook? Communication:Wireless? Function:Noise Cancelling、Microphone、for Video Game、Common Headphone、For Routine Office Work、For Mobile Phone、Portable、Sport、Supports music、Bluetooth、Wireless Headphone、Voice control? Plug Type:Wireless? Sensitivity:93??3dB? Frequency Response Range:20-20000Hz? Line Length:None? Resistance:32??? Model Number:R539? Use:Mobile Phone? Package:Yes? With Microphone:Yes? Is wireless:YesProduct Description:Hot Selling Roman R539 Ear Hook Camera Bluetooth Headset Wireless Stereo Earphone Music Headphone with Retail Package Bluetooth V4.1 Multi Pointing Smart Noise Reduction Wire Control English/Chinese Voice Prompt Good Sound Quality High Compatibility Built-in 70mAh Rechargeable Battery Product Size 53mm*25mm*15.4mm Fine Process Stylish Fashion Design Black/Blue/White Multi Colors