Bluetooth Speaker

We offers bluetooth speaker.
Bluetooth version：v2.1+edr portable, hanging portable design
bluetooth transmission power: class2 4dbm bluetooth wireless audio transmission
bluetooth working frequency：2.4ghz ariety of classic color for choice
charging voltage: dc5v500ma with phone handsfree
working voltage ：dc 3.7v computer small speakers
battery capacity:600ma car bluetooth
music playing time：4h "fm radio
"
talking time:8h card speakers
thd: ≤ 0.1% (3.7v1khz1.8w)
signal to noise ratio：≥65 db
speaker parameter :4ω3w ф40mm
bluetooth range :10-20m
"colour :red, blue, green,
black,white,
".