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These Back Bay American EQ 27 Sweatproof Wireless Earbuds are equipped with Back Bay's signature immersive sound, which comprises strong bass, a relaxed and natural midrange, and crisp highs. It has 5 equalizer sound settings that let you choose from rock, pop to classical. Its IPX4 sweatproof rating makes these earbuds ideal for long runs in the rain, sleet, and snow. With a fully adjustable ear hook, you can snuggle it around your ear for an athletic fit. The built-in microphone allows hands-free phone calls on the go.

4.7/5 stars on Amazon: ★ ★ ★ ★

  • Back Bay signature sound: Produce signature immersive sound of strong bass, relaxed & natural midrange, and crisp highs
  • Sweatproof: Ideal for long runs in the rain, sleet & snow
  • Fully adjustable ear-hooks: Adjust snuggly around the ear for an athletic fit or move up for a more casual fit
  • Built-in microphone: Take hands-free phone calls on the go
  • Altanta Bass: For rap or EDM tracks that need boming bass to take them to the next level
  • Stadium Rock: Captures that great 90’s arena sound.
  • Pure Podcast: Loud & clear vocals with all the boomy and harsh noise stripped out.
  • Clean Classical: Open & airy clarity with a rich, full tone.
  • Wireless: Untethered from cables & wires


  • Color: black, gold
  • Finish: matte
  • Materials: plastic, metal
  • Size: one-size-fits all
  • Driver sensitivity: 100±3dB(IEC-711,1kHz @1mW)
  • Output maximum: 5mW RMS
  • Impedance: 16Ω
  • Total harmonic distortion: ≤1%(@1000Hz)
  • Codecs supported: AAC, MP3, SBC
  • Profiles supported: HFP, HSP, A2DP, AVCP
  • Frequency range: 20Hz - 20kHZ
  • Driver size: φ11mm
  • Frequency band: 2.4 GHz
  • Wireless range: 30 feet
  • Microphone type: MEMS, omni directional
  • Microphone sensitivity: -42±3dB(@1kHz ref 1V/Pa)
  • Waterproof rating: IPX-7
  • Sweatproof rating: IPX-4
  • Battery voltage 3.7 V
  • Battery capacity: 55mAh*2
  • Playtime: 8 hours
  • Recharge time: About 2 Hours
  • Bluetooth 4.1
  • Sound equalizer settings
    • Back bay signature
    • Atlanta bass
    • Stadium rock
    • Pure podcast
    • Clean classical
  • Adjustable earhooks
  • Built-in microphone
  • Wireless
  • Manufacturer's 1-year warranty


  • Back Bay American EQ 27 Sweatproof Wireless Earbuds
  • Carrying Case
  • Micro-USB Charging Cable
  • 3x Ear-Tip Sizes


  • Ships to US
  • Expected Delivery: May 13 - May 18


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