The devices were poor by today’s standards, and while transistors would work at audio frequencies for hearing aids, getting them to work at AM radio frequencies was a challenge. The Sony ...

Amazon's Big Spring Sale starts tomorrow, but seriously, don't wait to pick this deal up. It's one of the best I've seen all ...

Sony currently manufactures both wireless radio frequency headphones and wireless Bluetooth headsets, but no headphones that combine the two technologies. Long a leader in the consumer and ...