Mophie made an iPhone battery pack to support wired headphones
Mophie Space Pack (NOTCOT)
Mophie Hold Force PowerStation Plus Mini (for iPhone 7) Review | PCMag
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ProCable Short 3.5mm 4-Conductor Headset / Audio Extension
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Mophie's modular case brings everything but a headphone jack to the iPhone 7 | TechCrunch
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Lightning to 3.5 mm Headphone Jack Adapter - Hanfis Collection
Mophie Juice Pack Helium Review — Gadgetmac
2 x Genuine Mophie Juice Pack Headphone Replacement 3.5mm Adapter Audio Extender 810472024356 | eBay
Review: Mophie Juice Pack Air battery case for iPhone 7 w/ Qi wireless charging base - 9to5Mac
Review: Mophie Juice Pack Air battery case for iPhone 7 w/ Qi wireless charging base - 9to5Mac
Mophie Juice Pack Helium for iPhone 5 Review | GearDiary
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Buy Headphones, Chargers, Cases And More | Three Accessories
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Bring back the headphone jack: Why USB-C audio still doesn't work | PCWorld
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