Sync by 50 headphones integrate 40mm drivers with Kleer wireless technology. Up to four listeners can simultaneously rock from a single source with the included 3.5mm wireless transmitter which allows a 50-foot range. Unlike standard Bluetooth wireless headphones, Kleer technology gives Sync by 50, 16-bit digital sound, up to 17 hours battery life, less interference and no feedback – which means better overall sound quality. Plug in the included cable to keep the music playing even longer.
