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Black open-ear wireless earbuds with adjustable ear hooks and charging case

EarFun OpenJump OW100B Open-Ear Headphones Black

SKU CH-KK4X-2AKXK

Open-ear wireless headphones with adjustable ear hooks, 14.2 mm drivers, LDAC audio, four-microphone AI call clarity, IPX7 waterproofing, 11 hours per charge and 42 hours total with the case

  • TypeOn-Ear
  • ColorBlack
  • Frequency Response5Hz-20KHz
  • THDOpen Ear
  • Input Impedance32 ohms
  • Power Supplycell, true
  • Open-ear design keeps you aware of surroundings while listening
  • LDAC and Hi-Res audio with 14.2 mm driver deliver detailed sound
  • Four-microphone AI system reduces background noise for clear calls
  • 11 hours per charge and 42 hours with case support all-day use
  • Adjustable ear hooks and 72.4 g weight provide a secure, comfortable fit

Open-Ear Comfort for Active Days

The EarFun OpenJump OW100B uses an open-ear design with adjustable ear hooks that sit outside the ear canal. This layout removes in-ear pressure while keeping the buds stable during workouts or runs. Listeners who want situational awareness — traffic, colleagues, announcements — stay connected to their surroundings without pausing audio.

All-Day Power and Quick Top-Ups

A single charge delivers 11 hours of playback and the supplied case extends total listening to 42 hours. When time is short, a 10-minute charge adds 2 hours of use. The integrated cell powers both buds and case, so there are no separate cables or power bricks to carry for daily sessions.

Durable Build with Flexible Control

An IPX7 rating means the buds survive heavy sweat and sudden rain without damage. Multipoint Bluetooth lets the headphones stay paired to two devices at once, switching automatically between a phone call and a laptop meeting. Touch controls on the open-ear shells handle volume, tracks and voice assistants without needing a companion app.

Highlights

  • Open-ear design keeps you aware of surroundings while listening
  • LDAC and Hi-Res audio with 14.2 mm driver deliver detailed sound
  • Four-microphone AI system reduces background noise for clear calls
  • 11 hours per charge and 42 hours with case support all-day use
  • Adjustable ear hooks and 72.4 g weight provide a secure, comfortable fit

Specifications

BrandEarFun
ModelEarFun OpenJump, OW100B
Part NumberOW100B
TypeOn-Ear
ColorBlack
Frequency Response5Hz-20KHz
THDOpen Ear
Input Impedance32 ohms
Power Supplycell, true
ConnectorNo Jack
Ear Couplingopen_ear
Cord LengthCable
Weight72.4 grams
Noise Cancellingnone
Wireless TypeBluetooth
Battery11 hours
Operating Time11 hours
Charge Time10 minutes
Contains Embedded Batterycell
Microphone Impedance~3K ohm
Microphone Frequency Response20Hz-20KHz
Featuresnone, 5.3, 11 hours, Touch Control, touch, Wireless, Open Ear, dynamic_driver, 32 ohm, EarFun OpenJump
Package ContentsEarFun OpenJump, User Manual, Cable

Questions about this item

How do I adjust the ear hooks so the 14.2 mm drivers stay aligned without pressing on my ears?

Slide each double-curved hook up or down until the open-ear module rests just outside the ear canal; the soft coating grips the cartilage without clamping.

What part will need replacement first after daily workouts?

The 32-ohm driver units are sealed, but the silicone ear-hook tips can stretch or tear; spares are inexpensive and user-replaceable.

At what point does the 11-hour single-charge limit appear during a long run?

Continuous playback at moderate volume reaches the 11-hour mark; a 10-minute top-up in the case adds roughly two more hours.

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