This document is the owner's guide for Bose® QuietComfort® 3 Acoustic Noise Cancelling® Headphones, providing instructions for use and important safety information.
This manual provides safety warnings, battery charging instructions, and proper usage guidelines for the Bose QuietComfort 3 acoustic noise‑cancelling headphones. It also explains how to connect the headphones to various audio sources and how to maintain the device.
Additional sections cover troubleshooting, parts replacement, and technical specifications such as battery capacity and charger requirements.
| Battery charger input voltage | 100 VAC – 240 VAC, 5.5 W |
|---|---|
| Battery voltage | 3.7 VDC |
| Battery capacity | 200 mAh |
| Battery life (full charge) | ≈ 25 hours |
| First‑charge time (new battery) | ≈ 2 hours |
A fully charged battery provides about 25 hours of playback.
The first charge of a new battery takes approximately two hours.
The charger accepts an input voltage from 100 VAC to 240 VAC and consumes 5.5 W.
Use the 3.5 mm plug on the headphone cable to connect to any standard 3.5 mm audio output.