Headband Style and USB Connectors bluetooth stereo headset

Headband Style and USB Connectors bluetooth stereo headset        Item HB-390 is a Smart bluetooth headset with CE, RoHS, BQB, FCC cetificate, Compatible with PAD, NOTEBOOK, Mobile phone with android, IOS, windows phone operating system     Product Features:                     > Bluetooth 4.0 + EDR > wireless bluetooth headphone sd card > Stereo Music, Handsfree Call > Noise cancelling function > For Mobile Phone, PAD, PC, MP3/MP4 > Power bass with vibration function > Sensitive MIC > Volume & music control > Soft leather cushion & headband stretchable   Specification Details:             

Connectivity	Bluetooth
Work Range	10 m
Playing Time	24 hours
Battery	Rechargable Lithium Polyermer
Speaker Diameter	40mm
Frequency Response	20Hz ~ 20KHz
MIc Frequency Response	10Hz ~ 15KHz
Mic sensitivity	-52db

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