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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

  • Frequency range5 Hz-20 kHz
  • Headphone styleOpen Ear
  • Impedance32 ohms
  • Power supplyCell, true
  • ConnectionNo Jack
  • Wearing styleOpen ear
  • 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.

How it compares

Measured against everything we stock in Earbuds & Over-Ear Headphones, at today’s prices. Recalculated every night.

Price $73.99
Pricier than about 81% of the 7,078 comparable items (median $25.99).

Specifications

Product
Brand nameEarFun
Model nameEarFun OpenJump, OW100B
Part numberOW100B
Product typeOn-Ear
Product colorBlack
Audio & video
Frequency range5 Hz-20 kHz
Headphone styleOpen Ear
Impedance32 ohms
Wearing styleOpen ear
Noise cancellationNone
Mic impedance~3K ohm
Mic frequency response20 Hz-20 kHz
Connectivity
Wireless technologyBluetooth
Ports & slots
ConnectionNo Jack
Power
Power supplyCell, true
Battery pack11 h
Run time11 h
Charging time10 minutes
Built-in batteryCell
Size & build
Cord lengthCable
Product weight72.4 g
In the box
In the boxEarFun 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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