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Unreal Battery Life, Unreal Sound
Back Bay Audio designed the Duet 50 Pro earbuds in Boston to give them the richest sound quality, the longest battery life and the most portable design. The result is a versatile pair of earbuds that our team personally uses in our Boston office and during our most intense workouts.
130 Hour Long Battery Life - We've packed in enough battery for every adventure! The earbuds can play for 8 hours straight, and the sleek charging case provides 122 more hours of music on the go.
Great For Small and Large Ears - The Pro earbuds comes with 6 size options, ranging from Extra-Small to XXL. We have ensured that even the smallest ears can find a comfortable fit
Classic American Hi-Fi Sound - Sound quality is our passion at Back Bay. We’ve dialed in the warm, vocal tone of classic American hi-fi stereo systems. We emphasize bass fullness while making sure that the vocals and high notes are natural and detailed. Using APTx technology, the earbuds can reproduce CD-quality sound.
Compatible with ALL Phones, Tablets and Computers with Bluetooth
Including:
- Apple: iPhone 18 Pro, iPhone 18 Pro Max, iPhone Duo, iPhone 17, iPhone 17 Pro, iPhone 17 Pro Max, iPhone 17e, iPhone Air, iPhone 16, iPhone 16 Plus, iPhone 16 Pro, iPhone 16 Pro Max, iPhone 16e, iPad Pro, iPad Air, iPad mini, iPad, MacBook Air, MacBook Pro, Apple Watch Series 12, Apple Watch Ultra 4, Apple Watch Series 11, Apple Watch Ultra 3, Apple Watch SE 3
- Samsung: Galaxy S26, Galaxy S26+, Galaxy S26 Ultra, Galaxy S26 FE, Galaxy S25, Galaxy S25+, Galaxy S25 Ultra, Galaxy S25 FE, Galaxy S24, Galaxy S24+, Galaxy S24 Ultra, Galaxy S24 FE, Galaxy Z Fold 8 Ultra, Galaxy Z Fold 8, Galaxy Z Flip 8, Galaxy Z Fold 7, Galaxy Z Flip 7, Galaxy Z Flip 7 FE, Galaxy Z Fold 6, Galaxy Z Flip 6, Galaxy A57 5G, Galaxy A37 5G, Galaxy A17 5G, Galaxy A36 5G, Galaxy A26 5G, Galaxy A55 5G, Galaxy A35 5G, Galaxy A16 5G, Galaxy Tab S11, Galaxy Tab S11 Ultra, Galaxy Tab S10, Galaxy Tab S10+, Galaxy Tab S10 Ultra, Galaxy Tab S10 FE, Galaxy Tab S10 Lite
- Google: Pixel 11, Pixel 11 Pro, Pixel 11 Pro XL, Pixel 11 Pro Fold, Pixel 10, Pixel 10 Pro, Pixel 10 Pro XL, Pixel 10 Pro Fold, Pixel 10a, Pixel 9, Pixel 9 Pro, Pixel 9 Pro XL, Pixel 9 Pro Fold, Pixel 9a, Pixel 8a
- Motorola: razr fold, razr ultra 2026, razr+ 2026, razr 2026, razr ultra 2025, razr+ 2025, razr 2025, edge 2025, moto g stylus 2026
- OnePlus: OnePlus 15, OnePlus 13, OnePlus 13R, OnePlus 12
If your phone has Bluetooth, it will work with these earbuds!
 Duet 50 Pro |  Tempo 30 |  FirstClass 50 |  Runner 40 | |
|---|---|---|---|---|
| Customer Reviews | — | — | — | — |
| Price | — | — | — | — |
| Special Features | 130 Hour Long Battery Life | Small Buds, Huge Sound | A.I. Active Noise Cancelling | Secure Fit for Runners |
| Features Speed-Charge | ? | ? | ? | ? |
| Features Bass Mode | ? | ? | ? | ? |
| Includes Case | Charging Case | Charging Case | Charging Case | Charging Case |
| Form Factor | In-Ear | In-Ear | In-Ear | In Ear (With Over-Ear Hook) |
Back Bay is a team of athletes and audiophiles in Boston who started creating the earbuds they always wanted but could never find. We fuse rich sound quality with premium materials to create durable workout headphones that sound amazing. We include dozens of real athletes in our design process to create products that truly solve problems and make workouts better.
"Best Wireless Workout Buds"
Strong Sound. Stronger Workout
Built to Last in Any Weather
Unreal Battery Life, Unreal Sound
Back Bay Audio designed the Duet 50 Pro earbuds in Boston to give them the richest sound quality, the longest battery life and the most portable design. The result is a versatile pair of earbuds that our team personally uses in our Boston office and during our most intense workouts.
130 Hour Long Battery Life - We've packed in enough battery for every adventure! The earbuds can play for 8 hours straight, and the sleek charging case provides 122 more hours of music on the go.
Great For Small and Large Ears - The Pro earbuds comes with 6 size options, ranging from Extra-Small to XXL. We have ensured that even the smallest ears can find a comfortable fit
Classic American Hi-Fi Sound - Sound quality is our passion at Back Bay. We’ve dialed in the warm, vocal tone of classic American hi-fi stereo systems. We emphasize bass fullness while making sure that the vocals and high notes are natural and detailed. Using APTx technology, the earbuds can reproduce CD-quality sound.
Compatible with ALL Phones, Tablets and Computers with Bluetooth
Including:
- Apple: iPhone 18 Pro, iPhone 18 Pro Max, iPhone Duo, iPhone 17, iPhone 17 Pro, iPhone 17 Pro Max, iPhone 17e, iPhone Air, iPhone 16, iPhone 16 Plus, iPhone 16 Pro, iPhone 16 Pro Max, iPhone 16e, iPad Pro, iPad Air, iPad mini, iPad, MacBook Air, MacBook Pro, Apple Watch Series 12, Apple Watch Ultra 4, Apple Watch Series 11, Apple Watch Ultra 3, Apple Watch SE 3
- Samsung: Galaxy S26, Galaxy S26+, Galaxy S26 Ultra, Galaxy S26 FE, Galaxy S25, Galaxy S25+, Galaxy S25 Ultra, Galaxy S25 FE, Galaxy S24, Galaxy S24+, Galaxy S24 Ultra, Galaxy S24 FE, Galaxy Z Fold 8 Ultra, Galaxy Z Fold 8, Galaxy Z Flip 8, Galaxy Z Fold 7, Galaxy Z Flip 7, Galaxy Z Flip 7 FE, Galaxy Z Fold 6, Galaxy Z Flip 6, Galaxy A57 5G, Galaxy A37 5G, Galaxy A17 5G, Galaxy A36 5G, Galaxy A26 5G, Galaxy A55 5G, Galaxy A35 5G, Galaxy A16 5G, Galaxy Tab S11, Galaxy Tab S11 Ultra, Galaxy Tab S10, Galaxy Tab S10+, Galaxy Tab S10 Ultra, Galaxy Tab S10 FE, Galaxy Tab S10 Lite
- Google: Pixel 11, Pixel 11 Pro, Pixel 11 Pro XL, Pixel 11 Pro Fold, Pixel 10, Pixel 10 Pro, Pixel 10 Pro XL, Pixel 10 Pro Fold, Pixel 10a, Pixel 9, Pixel 9 Pro, Pixel 9 Pro XL, Pixel 9 Pro Fold, Pixel 9a, Pixel 8a
- Motorola: razr fold, razr ultra 2026, razr+ 2026, razr 2026, razr ultra 2025, razr+ 2025, razr 2025, edge 2025, moto g stylus 2026
- OnePlus: OnePlus 15, OnePlus 13, OnePlus 13R, OnePlus 12
If your phone has Bluetooth, it will work with these earbuds!
Duet 50 Pro | Tempo 30 | FirstClass 50 | Runner 40 | |
|---|---|---|---|---|
| Customer Reviews | — | — | — | — |
| Price | — | — | — | — |
| Special Features | 130 Hour Long Battery Life | Small Buds, Huge Sound | A.I. Active Noise Cancelling | Secure Fit for Runners |
| Features Speed-Charge | ? | ? | ? | ? |
| Features Bass Mode | ? | ? | ? | ? |
| Includes Case | Charging Case | Charging Case | Charging Case | Charging Case |
| Form Factor | In-Ear | In-Ear | In-Ear | In Ear (With Over-Ear Hook) |
Back Bay is a team of athletes and audiophiles in Boston who started creating the earbuds they always wanted but could never find. We fuse rich sound quality with premium materials to create durable workout headphones that sound amazing. We include dozens of real athletes in our design process to create products that truly solve problems and make workouts better.
"Best Wireless Workout Buds"
Strong Sound. Stronger Workout
Built to Last in Any Weather
