HV-780 Bluetooth headset HBS neckband and in-ear flexible neck strap with volume control and microphone.

Color:black，sliver，gold，red，light green.

Style:neckband+in-ear+sporting.

Packing: with color box.(packing will comes flat)

HEADPHONES:

Bbluetooth transmission range:10 meters.

Speaker size:10mm.

Sensitivity:96±3db(at 1KHz 0.5Vrms).

Impedance:16Ω.

Frequency response:20~20，000Hz.

MICROPHONE:

Dimensions:4*1.5mm.

Sensitivity:-42dB+/-3dB.

Frequency response:30~16，000Hz.

Directivity:/omnidirectional.