function:bluetooth,waterproof,handfree call.                                                                                 Distance:10meters distance no barrel
voltage:DC5V
speaker:single 
weight:0.13kg/pcs
box quantity:100PCS
outbox dimension:47.5*26*38
bluetooth version:5.2
battery:300mhA
power:4O3W
speaker:40mm OD 36mm ID
Package:crystal case/ carboard box
Dimension:47.5*26*38MM
Color:Blue,Green,Black,white,red,yellow
Material:ABS