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Black open-ear wireless earbuds with charging case and digital display

JOYROOM JR-OE4 OE4 open-ear headphones Bluetooth 5.4 16 mm 50 h

SKU CH-MVGM-778AW

Open-ear wireless earbuds with Bluetooth 5.4, 16 mm drivers and 50-hour case playtime

  • TypeTrue Wireless
  • ColorBlack
  • Driver Unit16 millimeters
  • THDTrue Wireless
  • ConnectorNo Jack
  • Ear Couplingopen_ear
  • Ultra-light 10 g open-ear buds keep ears comfortable all day
  • 50 hours total playtime with the charging case and 12.5 hours per charge
  • 16 mm drivers with directional audio deliver powerful sound while reducing leakage
  • Bluetooth 5.4 provides faster, more stable wireless connection
  • IPX4 waterproof rating protects against sweat during runs and workouts

Open-ear comfort for all-day wear

The JR-OE4 earbuds use an open-ear design that leaves the ear canal unobstructed. Each bud weighs 10 grams for a barely-there feel during extended sessions. This approach reduces pressure and lets ambient sound through, suiting runners and office users who must stay aware of surroundings. Buyers who need full isolation for noisy commutes will not get it here.

Stable Bluetooth 5.4 link over long sessions

Bluetooth 5.4 maintains a steady connection up to 10 metres while you move between rooms or across a gym floor. The 16-millimetre dynamic drivers deliver consistent output without thermal throttling during the full 12.5-hour single-charge span. Touch controls stay responsive throughout. Users who demand active noise cancellation for focused work in loud environments should look elsewhere.

50-hour case capacity decides the purchase

The charging case stores enough energy for four full top-ups, reaching 50 hours total playtime before you need a wall outlet. Recharging the case itself takes 180 minutes. An LED readout shows remaining capacity at a glance. If your routine regularly exceeds two days between plug-in opportunities, this ceiling becomes the limiting factor.

Highlights

  • Ultra-light 10 g open-ear buds keep ears comfortable all day
  • 50 hours total playtime with the charging case and 12.5 hours per charge
  • 16 mm drivers with directional audio deliver powerful sound while reducing leakage
  • Bluetooth 5.4 provides faster, more stable wireless connection
  • IPX4 waterproof rating protects against sweat during runs and workouts

Specifications

BrandJOYROOM
ModelJR-OE4, OE4
TypeTrue Wireless
ColorBlack
Driver Unit16 millimeters
THDTrue Wireless
ConnectorNo Jack
Ear Couplingopen_ear
Noise Cancellingnone
Wireless TypeBluetooth
Battery12.5 hours
Operating Time12.5 hours
Charge Time180 minutes
Distance10 meters
Featuresnone, 5.4, 12.5 hours, Touch Control, touch, Wireless, True Wireless, dynamic_driver, 10 meters

Questions about this item

Will the OE4 buds and charging case last through a full day of calls and music without recharging?

The case holds 50 hours total; each bud gives 12.5 hours on a single charge, so a typical workday is well covered.

What device do I need to pair these OE4 earbuds with?

Any phone, tablet or computer that supports Bluetooth 5.4 will connect instantly when you open the case.

Can I keep using my current phone if it only has an older Bluetooth version?

Yes, Bluetooth 5.4 is backward compatible, so the OE4 buds will pair and work normally with earlier Bluetooth devices.

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