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Don't let the price fool you. Back Bay Audio rigorously tuned the Duet 50 Slims to have all the sound quality of more premium earbuds at only 1/3 the price. It features the classic "American Hi-Fi Sound," strong bass, relaxed, natural midrange, and crisp highs. The built-in microphone allows hands-free calls, and the wireless controls allow navigation without ever touching your phone. With a total of 30 hours of battery life, the Duet 50 Slims are in a class of their own! The earbuds can play 8 hours of music in a single sitting, and the charging case can power 22 more hours of music on the go. The Duet 50 Slims are also IPX5 waterproof, meaning they're completely unaffected by sweat or rain.

  • 30-Hour Total Battery Life. Longer battery life than Apple AirPods
  • Classic American Hi-Fi Sound. Strong bass, relaxed, natural midrange & crisp highs
  • Built-In Mic. Take hands-free phone calls on the go
  • Wireless Controls. Answer phone calls & control your music without touching your phone
  • Sweatproof. Completely unffacted by sweat or rain


  • New York Magazine: "Best Wireless Earbuds for Woking Out...Back Bay earbuds have excellent bass output"
  • Forbes: "The sound is impressive with plenty of bass and a well-articulated treble that handles cymbals and guitars well"
  • The Boston Globe: "The sound quality is crisp and nicely balanced...The Duet 50's aren't noticeably shabbier than a $130 pair of Bose SoundSport headphones"


  • Color: space grey
  • Materials: metal, plastic
  • One size fits all
  • Dimensions: 1.2"H x 3.2"L x 3.2"W
  • Bluetooth version: 5.0
  • Driver sensitivity: 95±3dB(IEC-711,1kHz @1mW)
  • Output maximum: 5mW
  • Impedance: 16Ω±15%
  • Total harmonic distortion: ≤5%(@1000Hz)
  • Codecs supported: APTX, AAC, SBC
  • Profiles supported: HFP, HSP, A2DP, AVCP
  • Frequency range: 20Hz - 20kHz
  • Driver size: φ6mm
  • Frequency band: 2.4GHz
  • Wireless range: 30ft
  • Microphone type: MEMS, omni directional
  • Microphone sensitivity: -42±3dB(@1kHz ref 1V/Pa)
  • Waterproof rating: IPX5
  • Battery type: Lithium-Ion
  • Battery voltage: 3.7V
  • Earphone playtime: 8 hours
  • Total playtime with charging case: 30 hours
  • Recharge time: 1.5 hours
  • Earbud battery capacity: 50mAh x2
  • Charging case beatetry capacity: 480mAh
  • Manufacturer's 1-year warranty


  • Back Bay Duet 50 Slim Wireless Earbuds
  • Metal Charging Case
  • USB-C Charging Cable
  • 6x Eartip Sizes


  • Ships to US
  • Expected Delivery: Dec 3 - Dec 8


  • Returns accepted within 30 days of shipment for orders within the Contiguous US.