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
Green over-ear headphones with LED lights, MicroSD slot and 3.5mm cable

Contixo

Contixo KB-300 Green Bluetooth headphones, 85dB limit, MicroSD, FM, 3.5mm, 10h, 30ft

SKU CH-RXZV-SDMYQ MPN KB-300 Green

Volume-limited children's headphones with Bluetooth, MicroSD player, FM radio, 3.5mm cable, ten-hour battery and thirty-foot range

  • TypeHeadphone
  • ColorGreen
  • Connector3.5mm
  • Ear CouplingCircumaural
  • Cord Length< 3.0 feet
  • WeightApprox. 4.8 oz
  • Volume limited to 85dB protects young ears
  • Built-in MicroSD player works without a phone
  • FM radio adds extra listening options
  • 5mm cable gives wired backup when battery runs low
  • Bluetooth range reaches 30ft for freedom of movement

Safe listening for children

The Contixo KB-300 Green headphones are designed for children aged three and above. A built-in limiter caps audio output at 85dB to protect developing hearing. Circumaural cups provide passive noise isolation. Bluetooth connectivity works with phones, tablets, laptops and gaming consoles up to 30ft away. The headset weighs approximately 4.8 oz.

MicroSD player FM radio and wired backup

A MicroSD card slot lets the headphones play stored music without a paired device. An integrated FM radio adds another standalone source. The 3.5mm AUX cable enables wired listening when the battery is flat or for non-Bluetooth gear. A built-in microphone supports hands-free calls. Colour LED lights illuminate during use. Battery life reaches 10 hours per charge.

Ideal for young listeners not for critical audio

These suit parents who want a simple, volume-controlled wireless headset for a child. They also work for travel where a single device handles Bluetooth, card playback and radio. Buyers who need high-fidelity sound, active noise cancellation or multi-device multipoint pairing should look elsewhere. The 3.0ft cable length may restrict movement in wired mode.

Highlights

  • Volume limited to 85dB protects young ears
  • Built-in MicroSD player works without a phone
  • FM radio adds extra listening options
  • 5mm cable gives wired backup when battery runs low
  • Bluetooth range reaches 30ft for freedom of movement

Specifications

BrandContixo
SeriesKB-300
ModelKB-300
TypeHeadphone
ColorGreen
Connector3.5mm
Ear CouplingCircumaural
Cord Length< 3.0 feet
WeightApprox. 4.8 oz
Noise CancellingPassive
Wireless TypeBluetooth
BatteryMax 9hrs (CONTINUOUS COMMUNICATION TIME)
Operating TimeMax 9 hrs
Charge TimeMax 2 hrs
Sports Team1 Packs
Contains Embedded BatteryYes
CompatibilityCellphones, Tablets, Laptops, Gaming Consoles
Shipping weight0.28 kg
Package size229 × 196 × 48 mm

Questions about this item

Will the 85 dB volume limiter ever need recalibration or replacement?

The 85 dB limit is built into the headphone circuitry and has no user-serviceable parts that require recalibration or replacement.

During a full-day trip, will the 10-hour battery run out before the 30 ft Bluetooth range becomes an issue?

The 10-hour operating time is the first limit you will reach; the 30 ft range stays constant until the battery is depleted.

How warm do the circumaural earcups get and does the LED lighting add noticeable heat after several hours?

Passive noise isolation and low-power LEDs keep earcup temperature close to body warmth even during extended sessions.

Also in this aisle

People compared these

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