*Material: PVC
*Main part of plastic part: PP+PS
*Earplug: 15*5mm, Bore: 5mm , Polyether foam cotton, density:20 Size:2m*1m
*Diameter of pipe: ø5.4mm*2 PVC pipe
*Thickness of pipe:0.5mm
*Length of pipe: 1.2M
*Sound: 98dB /milliwatt
*Temperature: -10℃-50℃
*Plug:7.0mm double pin
*Weight:43g