These were probably the best wireless headsets on the market. I love them so much I went for black too. But I bet it will handle 984 Million ft wavelength signals. Good thing about Amazon, easy return and fast refund. The tag was not attached as it was on the large and the velcro cover was missing. Il est même possible de les faire sonner individuellement. It will work and hope it wont be worse later. I only wish they had half sizes like their boots and wedges. Needed a couple days to stretch out the strap , but now theyre super comfortable . If a person has no foot issues I would highly recommend the Betulas.