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Khaki open-ear headphones with ear hooks and LED charging case

CoolJumper Q28-K Open Ear Bluetooth 5.4 Headphones Khaki

SKU CH-1Y9V-NHGRX

Open-ear Bluetooth 5.4 headphones with 16.2 mm drivers, IPX7 waterproofing and 60-hour total playtime from an LED charging case

  • TypeOn-Ear
  • ColorKhaki
  • Driver Unit16.2 millimeters
  • THDOpen Ear
  • ConnectorNo Jack
  • Ear Couplingopen_ear
  • Open-ear design keeps ears unblocked for situational awareness
  • 2 mm driver delivers clear audio with open-ear comfort
  • Bluetooth 5.4 provides stable wireless connection up to 10 metres
  • Up to 60 hours total playtime with LED digital charging case
  • IPX7 waterproof rating withstands sweat and light rain during sports

Open-Ear Comfort for Active Use

These CoolJumper Q28-K headphones use an open-ear hook design that leaves the ear canal unobstructed. The 5 g buds sit outside the ear so ambient sound remains audible for safer outdoor running, cycling and commuting. Bluetooth 5.4 provides a stable connection up to 10 metres from the source device.

60-Hour Case with LED Power Readout

The supplied charging case extends single-charge listening from 8 hours to a total of 60 hours and shows real-time battery levels for both earbuds and case on an LED screen. A USB-C cable replenishes the case in 1.5 hours. Touch controls on the buds handle playback and calls without reaching for a phone.

IPX7 Build and Secure Fit

Each bud weighs 0.26 oz and is rated IPX7 against sweat and rain, making them suitable for intense gym sessions or sudden showers. Flexible silicone hooks keep the drivers in place during vigorous movement. Environmental noise cancellation helps clarify voice calls in windy or busy surroundings.

Highlights

  • Open-ear design keeps ears unblocked for situational awareness
  • 2 mm driver delivers clear audio with open-ear comfort
  • Bluetooth 5.4 provides stable wireless connection up to 10 metres
  • Up to 60 hours total playtime with LED digital charging case
  • IPX7 waterproof rating withstands sweat and light rain during sports

Specifications

BrandCoolJumper
ModelQ28-K
TypeOn-Ear
ColorKhaki
Driver Unit16.2 millimeters
THDOpen Ear
ConnectorNo Jack
Ear Couplingopen_ear
Cord LengthUser Manual
Weight5 grams
Noise Cancellingenvironmental_noise_cancellation
Wireless TypeBluetooth
Battery8 hours
Operating Time8 hours
Charge Time1.5 hours
Distance10 meters
Featuresenvironmental_noise_cancellation, 5.4, 8 hours, Touch Control, touch, Bluetooth, Open Ear, dynamic_driver, 10 meters, 2 * Open Ear Bluetooth Headphones
Package Contents2 * Open Ear Bluetooth Headphones, Wireless Charging Case, User Manual, 1 * USB C Cable

Questions about this item

How long do the earbuds last on a single charge before they need the case?

Each earbud gives up to 8 hours of playback on one charge, and the case extends total listening time to 60 hours.

How far can I move from my phone before the Bluetooth 5.4 link drops?

The wireless range is rated at 10 meters in open space, so walls or interference will reduce that distance.

Will the ear hooks and IPX7 rating keep the buds working through heavy sweat?

Yes, the IPX7 rating protects against sweat and light rain, and the lightweight 0.26 oz hooks stay secure during intense workouts.

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