The Bose QuietComfort Ultra Earbuds : offer world-class noise cancellation and immersive spatial audio

Technical Specifications

• General

  • Weight (per earbud): 6.24 g
  • Colors: Black, White, Moonstone Blue, and others
  • Ingress Protection: IPX4 (sweat and water-resistant)
  • In the Box: 2x QuietComfort Ultra Earbuds, charging case, Bose Fit Kit (3 pairs of ear tips and 3 pairs of stability bands in various sizes), USB-C cable (30 cm), safety sheet

• Connectivity

  • Bluetooth Version: 5.3
  • Bluetooth Range: up to 9 m (30 ft)
  • Codecs: SBC, AAC, and aptX Adaptive
  • Multipoint Connectivity: Yes (connect to two devices simultaneously)

• Battery

  • Battery Life (Earbuds): up to 6 hours (4 hours with Immersive Audio)
  • Battery Charge Time (Earbuds): approximately 1 hour
  • Battery Charge Time (Case): approximately 3 hours
  • Charging Method: USB-C (wired), also supports wireless charging
  • Quick Charge: 20-minute charge for about 2 hours of playback
  • Additional Charges from Case: 3 full additional charges

Description

The Bose QuietComfort Ultra Earbuds are Bose’s flagship earbuds, offering an impressive blend of premium sound and market-leading noise cancellation. At its heart is the CustomTune technology, which automatically adapts both noise cancellation and audio output to the unique anatomy of your ear canal. This creates a personalized listening experience that sounds optimal in every ear.

Immersive Sound with 360-Degree Audio

A standout feature of these earbuds is Bose 360-degree sound, which creates a spatial audio experience. This mode makes music sound as if it’s coming from outside, not directly from the earbuds, creating a deeply immersive feeling. Dynamic head tracking follows your movements and keeps the sound in place, making you feel as if you are sitting in front of a fixed speaker. In Immersive mode, the battery life of the earbuds is limited to about 4 hours, which reflects the intensity of this feature.

Design and Controls

The earbuds are IPX4 sweat and water-resistant, making them ideal for workouts or use in light rain. They are controlled via touch controls directly on the earbuds, which manage playback, volume, and switching between listening modes (Quiet, Aware) through swipe and tap gestures. The Bose Music App provides additional customization options, such as managing Bluetooth connections, adjusting the EQ, and creating custom noise-canceling modes.