Bose Ultra Open 881046-0400
The open-ear design pairs Bose Immersive Spatial Audio with OpenAudio tech for private, rich sound while maintaining awareness, backed by a 7.5-hour bud battery and 27-hour total case life. Its 6g weight, IPX4 rating, and quick-charge (10 minutes for 2 hours) make it a rugged choice for constant movement. Best for runners and urban commuters who need situational awareness without sacrificing music, though its weak 48.2/100 call score makes it a poor fit for heavy phone use.
form factor open-ear
driver type dynamic
Wireless Yes
bluetooth version 5.3
battery life hours 7.5
case battery hours 19.5
water resistance IPX4
77 Overall Score
Price R$2,768
Snapshot
What owners think
How owner sentiment changed over time
ExclusiveBased on when customers actually wrote their reviews - so you can see whether early praise held up.
Owner sentiment has cooled since launch
Based on 107 dated customer reviews, grouped by calendar quarter. Period analysis is in English.
The proof
Performance
Specifications
Full Specifications
Design
| Form Factor | open-ear |
| Wearing Style | Dual Ear True Wireless Earbud |
| Weight | 0.1 kg / 0.1 lbs |
Audio
| Driver Type | dynamic |
| Drivers | 1 |
| Codecs | AAC, SBC |
| Surround | Spatial Audio |
Noise Control
| ANC | No |
| Transparency | Yes |
Connectivity
| Wireless | Yes |
| Bluetooth | 5.3 |
| Profiles | A2DP, HFP |
| Multipoint | No |
| Range | 9.1 |
Earbud Battery
| Battery Life | 7.5 |
| Charge Time | 1 |
| Fast Charging | 10 Minutes for 2 Hours |
| Charging | USB-C |
Case Battery
| Case Battery | 19.5 |
| Case Charging | USB-C |
| Wireless Charging | No |
Microphone
| Microphone | Yes |
| Mic Count | 4 |
| NC Mic | No |
Features
| Touch Controls | Yes |
| App | Bose Music |
| Volume Limiting | No |
| Bone Conduction | No |
| Water Resistance | IPX4 |
vs Competition
| Spec | Bose Ultra Open 881046-0400 | Technics EAH-AZ100 EAH-AZ100-S | Sony WF-C700N WFC700N/B | JBL Live Beam JBLLIVEBEAM3SILAM | EarFun Air Pro TW230B | Sennheiser MOMENTUM True Wireless 509181 |
|---|---|---|---|---|---|---|
| Form Factor | open-ear | in-ear | in-ear | in-ear | in-ear | in-ear |
| Driver Type | dynamic | dynamic | dynamic | dynamic | dynamic | dynamic |
| Wireless | true | true | true | true | true | true |
| Active Noise Cancellation | false | true | true | true | true | true |
| Bluetooth Version | 5.3 | 5.3 | 5.2 | 5.3 | 5.4 | 5.2 |
| Battery Life Hours | 7.5 | 8 | 15 | 12 | 9.5 | 7 |
| Case Battery Hours | 19.5 | 28 | 15 | 36 | 40 | 28 |
| Water Resistance | IPX4 | IPX4 | IPX4 | IP55 | IP55 | IPX4 |
| Multipoint | false | true | true | true | true | false |
| Compare | Compare | Compare | Compare | Compare |
| Product | Anc | Mic | Build | Sound | Battery | Comfort | Connectivity | Social Proof |
|---|---|---|---|---|---|---|---|---|
| Bose Ultra Open 881046-0400 | 66.4 | 62.3 | 81.6 | 87.2 | 74.9 | 73.4 | 82.3 | 72.5 |
| Technics EAH-AZ100 EAH-AZ100-S Compare | 97.5 | 97.5 | 81.6 | 99.1 | 83.1 | 73.4 | 99.9 | 80.7 |
| Sony WF-C700N WFC700N/B Compare | 97.5 | 84.2 | 81.6 | 83.1 | 83.1 | 73.4 | 90 | 72.5 |
| JBL Live Beam JBLLIVEBEAM3SILAM Compare | 97.5 | 97.5 | 92.1 | 83.1 | 91.6 | 73.4 | 96.5 | 89.8 |
| EarFun Air Pro TW230B Compare | 90.8 | 97.5 | 92.1 | 90 | 88.9 | 73.4 | 93.9 | 89.8 |
| Sennheiser MOMENTUM True Wireless 509181 Compare | 97.5 | 97.5 | 81.6 | 99.8 | 81.7 | 94.7 | 84.7 | 35.5 |
Price
Value & Pricing
From R$2,768
