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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

  • Driver size16.2 mm
  • Headphone styleOpen Ear
  • ConnectionNo Jack
  • Wearing styleOpen ear
  • Cord lengthUser Manual
  • Noise cancellationEnvironmental noise cancellation
  • 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.

How it compares

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

Price $38.99
Pricier than about 64% of the 7,078 comparable items (median $25.99).

Specifications

Product
Brand nameCoolJumper
Model nameQ28-K
Product typeOn-Ear
Product colorKhaki
Performance
Supported distance10 m
Audio & video
Driver size16.2 mm
Headphone styleOpen Ear
Wearing styleOpen ear
Noise cancellationEnvironmental noise cancellation
Connectivity
Wireless technologyBluetooth
Ports & slots
ConnectionNo Jack
Power
Battery pack8 h
Run time8 h
Charging time1.5 h
Size & build
Cord lengthUser Manual
Product weight5 g
In the box
In the box2 * 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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