The QuietComfort 45 headphones are intended to replace the QuietComfort 35 II by way of improved functions, a new “AWARE” mode, and better battery life. This is good because Bose’s new 45 headset costs about $30 more than the 35 II.
Bose
According to the official announcement, QuietComfort 45 headphones utilize a new electronic active noise cancellation system for better sound control. QUIET Mode can identify and adjust for mid-range frequency sounds to block out background noises like commuter trains or loud cafes.