Description
Headphones with Bluetooth, SD, FM, Ovleng MX666 - 20310 - Bluetooth

    Bluetooth version: V4.1 + EDR
    Loudspeaker Frequency Response: 20HZ - 20,000 HZ
    Operating distance: about 10 meters.
    Built-in rechargeable battery.
    Battery Model: Lithium polymer battery 300mAH
    Loudspeaker Diameter: 40 mm
    Loudspeaker Impedance: 32 ohm  
    Working Time:  4 ~ 6 hours  
    Talk Time: 8 ~ 10 hours    
    Charging Port: Micro USB
    Microphone Sensitivity: -42 dB
    Color: Black/Red, Black/Blue, Black/Yellow

Specification
Accesory type     Bluetooth headphones
Battery life     10 hours talking time
Compatibility     Universal
Color     Different colors
Design     Over-Ear
Microphone     Yes