We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Blue foldable over-ear headphones with padded cushions and adjustable headband

Acesori HK03 Over-Ear Headphones Blue 85/94dB 3.5mm 40mm 32ohm 5.2oz

SKU CH-Q89V-CW5XN

Over-ear children's headphones with 85/94 dB dual volume limiter, 40 mm drivers and a 3.5 mm plug

  • TypeOver the Ear
  • ColorBlue
  • Driver Unit40 millimeters
  • THDOver Ear
  • Input Impedance32 ohms
  • Signal to Noise Ratio(SNR)85 decibels
  • Volume-limited 85/94 dB protects young ears
  • CPSIA-approved hypoallergenic materials prevent irritation
  • 40 mm drivers deliver clear stereo sound
  • 5 mm plug works with most devices
  • Foldable 5.2 oz design fits travel bags

Safe Listening for Children

These over-ear headphones are designed for young users who need wired audio for school, travel or home entertainment. A built-in volume limiter offers two settings at 85 and 94 decibels to protect developing hearing. The lightweight frame weighs 5.2 ounces and folds for easy storage in a backpack.

Dual Volume Limiter 85/94dB

The single specification that determines suitability is the selectable output cap of 85 or 94 decibels, which keeps sound pressure within recommended limits for children. A 40 millimeter dynamic driver with 32 ohm impedance connects through a standard 3.5 millimeter plug for universal device compatibility.

Passive Isolation and Low Power Draw

Passive noise cancellation from the over-ear cushions reduces background sound without active electronics, so there is no battery to charge. The wired 3.5 millimeter connection draws minimal power from the host device, and the lightweight build stays comfortable during long listening sessions.

Highlights

  • Volume-limited 85/94 dB protects young ears
  • CPSIA-approved hypoallergenic materials prevent irritation
  • 40 mm drivers deliver clear stereo sound
  • 5 mm plug works with most devices
  • Foldable 5.2 oz design fits travel bags

Specifications

BrandAcesori
Modelacer-Hk03, HK03
Part NumberHK03
TypeOver the Ear
ColorBlue
Driver Unit40 millimeters
THDOver Ear
Input Impedance32 ohms
Signal to Noise Ratio(SNR)85 decibels
Sensitivity85 decibels
Connector3.5mm
Ear CouplingOn ear
Weight5.2 ounces
Noise CancellingPassive
Wireless TypeIR
Microphone Impedance~3K ohm
Microphone Signal to Noise Ratio(SNR)85 decibels
Microphone Sensitivity85 decibels
Featurespassive_noise_cancellation, Tangle Free, push_button, Wired, Over Ear, dynamic_driver, 32 ohm, acer Hk03 Kids Headphone
Package Contentsacer Hk03 Kids Headphone, User Manual

Questions about this item

What does the 85/94dB dual volume limit mean when the headphones are plugged into a tablet?

The built-in limiter caps output at 85dB for everyday use and allows a higher 94dB mode for noisier environments, both measured at the 40mm drivers.

How does the 3.5mm jack affect compatibility and audio quality?

The 3.5mm connector provides plug-and-play stereo sound with any device that has a matching port; no battery or pairing is required.

Will the foldable frame and 5.2oz weight fit a small child's head and a travel bag?

The adjustable headband and on-ear cushions adapt to different head sizes, while the foldable hinges reduce the footprint for packing.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.