RELATIVE TECHNOLOGY PARAMETER:
Digital formats supported MP3/WAV/WMA
PC interface supported USB2.0
Mfr estimated battery life 5 hours
Battery tape/capacity 3.7V.150mAH
Maximum input power rating 5VDC
Earphone output power 5mw
Voice output frequency 20HZ-20Khz
THD 0.05%
Recharging time 2 hours
Normally works current 30-35mA
Memory Flash 128MB-2GB
Signal-to-noise ratio 85db
Earphone impedance 16
Weight 52g
Dimensions 172*160*40mm
Extended Length of Earphone fixed lever 14mm
Rotary degree of earphone fixed lever 270
Rotary degree of earphone 90

sunglass MP3 box size is:7.5*8.5*19CM

GW:215g

NW:55g

packing:

QTY:50/CTN

GW:12KGS

CTN SIZE: 41*42*46CM

bluetooth  sunglass with mp3 same same up size.