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Black open-ear headphones with adjustable ear hooks and charging case

Soundcore Aerofit 2 A3874 open-ear headphones

SKU CH-0SRA-76PZJ

Open-ear headphones with adjustable hooks, 20 mm racetrack drivers, Bluetooth 5.4, 10-hour battery, IP55 rating and AI translation for 100 languages

  • TypeOn-Ear
  • ColorBlack
  • Frequency Response5Hz-20KHz
  • THDOpen Ear
  • Input Impedance16 ohms
  • Signal to Noise Ratio(SNR)127.5 decibels
  • Open-ear comfort with non-invasive double-curved design
  • 4-level adjustable hooks fit over 99% of ear shapes
  • Directional audio tech minimises sound leakage
  • 2× deeper bass from 20 mm × 11.5 mm racetrack drivers
  • Real-time translation across 100 languages via app

Open-Ear Headphones with Adjustable Fit

The Soundcore Aerofit 2 A3874 uses an open-ear design with double-curved ear hooks that rest outside the canal. Four adjustable positions adapt to over 99 percent of ear shapes for a secure, non-invasive fit. Weighing 85 grams, they suit runners, commuters and office workers who need to stay aware of surroundings while listening.

Upgrade from Sealed Earbuds for Awareness and Bass

Switching from traditional in-ear models removes the occlusion effect and lets ambient sound pass naturally. The jump is worth it when you need situational awareness outdoors or during calls. Racetrack drivers measuring 20 by 11.5 mm deliver twice the bass depth, while Bluetooth 5.4 and LDAC support stable Hi-Res streaming.

Check App Version and Charging Habits Before Buying

Real-time translation across 100 languages requires the Soundcore app at version 3.8.7 or later and the latest earbud firmware. The case provides 42 hours of total playtime and supports wireless charging, but the buds themselves run for 10 hours per charge. IP55 rating handles sweat and light rain, not submersion.

Highlights

  • Open-ear comfort with non-invasive double-curved design
  • 4-level adjustable hooks fit over 99% of ear shapes
  • Directional audio tech minimises sound leakage
  • 2× deeper bass from 20 mm × 11.5 mm racetrack drivers
  • Real-time translation across 100 languages via app

Specifications

BrandSoundcore
Series3874
Modelsoundcore Aerofit 2, A3874
Part NumberA3874
TypeOn-Ear
ColorBlack
Frequency Response5Hz-20KHz
THDOpen Ear
Input Impedance16 ohms
Signal to Noise Ratio(SNR)127.5 decibels
Power Supplycell, a, lithium_polymer, true
Sensitivity127.5 decibels
ConnectorNo Jack
Ear Couplingopen_ear
Cord LengthCable
Weight85 grams
Noise Cancellingnone
Wireless TypeBluetooth
Battery10 hours
Operating Time10 hours
Charge Time1 hours, 10 minutes
Distance10 meters
Contains Embedded Batterycell
Microphone Impedance16 ohm
Microphone Frequency Response20Hz-20KHz
Microphone Signal to Noise Ratio(SNR)127.5 decibels
Microphone Sensitivity127.5 decibels
Compatibilitypc_usb
Featuresnone, 5.4, 10 hours, Detachable, Touch Control, touch, Wireless, Open Ear, dynamic_driver, 16 ohm, 10 meters, soundcore AeroFit 2
Windows Vistapc_usb
Package Contentssoundcore AeroFit 2, Charging Case, Cable

Questions about this item

How do the adjustable ear hooks fit different ear sizes?

The four-level adjustable ear hooks are designed to suit over 99% of ear shapes and sizes, letting you choose the position that feels most secure.

What step is often missed when setting up real-time translation?

You must update the Soundcore app to version 3.8.7 or later and install the latest earbud firmware before the translation feature will work.

What charging routine keeps the case ready for the full 42 hours of playtime?

Place the case on a wireless charger after each use; the earbuds give 10 hours per charge and the case stores the remaining 32 hours.

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