Back Bay Audio Sweatproof Wireless Earbuds 130H Battery

Back Bay Audio Duet 50 Pro are sweatproof true wireless earbuds with an ultra-long 130-hour combined battery, dual mics for clear calls, and a compact charging case that can also top up your phone.

Designed in Back Bay Audio’s Boston studio, the Duet 50 Pro blends marathon battery life, weather-resistant construction, and tuned sound for everyday listening and active use. These TWS earbuds pair with iPhone and Android devices, offer hands-free calling through dual microphones, and include a mini charging case that extends playtime and can act as an emergency power bank for a phone.

How long will the battery last during daily use?

The Duet 50 Pro delivers up to 8 hours per earbud on a single listen and a total of 130 hours when you include the compact charging case. That makes them a strong choice for long trips, multi-day commutes, or extended workouts without frequent recharging.

• 8 hours per earbud on a single charge
• 122 additional hours from the charging case
• USB-C case recharge restores full 130-hour capacity
• Quick top-ups let you extend listening time between uses

Do these earbuds work well for phone calls and voice assistants?

Yes — each earbud has dual microphones to improve voice pickup and reduce background noise for clearer conversations. You can answer calls, control playback, and access voice assistants on both iOS and Android devices with simple touch controls.

• Dual-mic array on each earbud for reliable voice capture
• Touch controls for call handling and media navigation
• Compatible with Siri, Google Assistant, and common voice services
• Stable Bluetooth connection for fewer dropped calls

Are the Duet 50 Pro suitable for exercise or wet weather?

The Duet 50 Pro feature a sweatproof nano-coating rated IPX5, so they stand up to heavy perspiration, rain, or snow during runs and workouts. They are not intended for swimming or full water immersion, but they handle common outdoor conditions and intense gym sessions.

• IPX5 nano-coating resists sweat and light rain
• Secure, ergonomic fit for running and training
• Durable finish designed for active lifestyles
• Not rated for submersion or swimming

What kind of sound profile and extra features can I expect?

Back Bay Audio tuned these earbuds for a balanced, lively presentation with pronounced bass, clear midrange, and crisp highs inspired by classic American hi-fi. The charging case doubles as a small power source for smartphones, giving extra utility when you need an emergency top-up.

• Signature Back Bay Audio tuning: warm lows, natural mids, detailed highs
• Mini charging case provides portable power to recharge your phone
• Compact, pocketable design for daily carry
• Universal compatibility with iPhone and Android devices

Who is this for? The Duet 50 Pro is built for people who want all-day wireless listening without constant recharging: commuters, frequent travelers, runners, and anyone who values long battery life in a sweat-ready design. If you need dependable call performance, a rich sound signature tuned by an audio-focused brand, and the convenience of a charging case that can also charge your phone, these earbuds are a strong fit.