Headphone Headband Expansion Life Tester RS-6910
The Headphone Headband Expansion Life Tester RS-6910 is designed for the expansion (opening and closing) life test of headphones. The expansion test method is: after the headphones are fixed by the left and right clamps, they are stretched to a certain distance in the left and right directions at the same time and then returned to the starting position at the same time. The test stroke can be set. After N tests, remove the headphones to test the headband performance