The Bose QuietComfort 45 SE are premium wireless noise-cancelling headphones featuring legendary Bose acoustic technology. These over-ear headphones deliver high-fidelity audio with adjustable EQ settings, allowing you to customize bass, mid-range, and treble levels to your personal preferences. The proprietary TriPort design produces superior sound from a lightweight, comfortable frame.

The headphones feature world-class active noise cancellation with two distinct modes: Quiet Mode for complete noise cancellation, and Aware Mode which uses external microphones to let ambient sounds through when needed. Tiny microphones continuously measure, compare, and react to outside noise for optimal cancellation performance.

Designed for all-day comfort, the plush synthetic leather ear cushions and headband padding provide a luxurious feel with minimal clamping force. Impact-resistant nylon construction and custom cast-metal hinges ensure long-term durability. The lightweight design makes you almost forget you're wearing them, even during extended listening sessions.

Battery life delivers up to 24 hours of wireless playback on a single charge. A quick 15-minute charge via the included USB-C cable provides up to 3 hours of play time. For even longer listening, plug in the included 2.5mm to 3.5mm audio cable for wired operation.

Bluetooth 5.1 provides a strong wireless connection up to 30 feet from your paired device. The headphones remember your last 7 paired devices for easy switching between multiple sources. The Bose Music app offers guided setup, personalized audio settings, and access to voice assistant features via the multi-function button. SimpleSync technology allows pairing with select Bose speakers and soundbars for a private listening experience.

The package includes the QuietComfort 45 headphones, soft carry case, USB-C to USB-A charging cable (12 inches), 2.5mm to 3.5mm audio cable (43.5 inches), quick start guide, and safety sheet. Model 866724-0500 weighs 8.5 ounces and comes in black.