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No Sew

No Sew Betron B25 In-Ear Headphones Black 3.5mm 16g 112dB 20-20000Hz 1.2m

SKU CH-YY6S-42SM0

Wired in-ear headphones with 9 mm drivers deliver 20 Hz to 20000 Hz response, 112 dB sensitivity, 16 ohm impedance, 1.2 m cable and 3.5 mm jack

  • Driver size9 mm
  • Frequency range20000 Hz
  • Headphone styleIn Ear
  • Impedance16 ohms
  • Signal-to-noise ratio112 decibels
  • Audio sensitivity112 decibels
  • Noise isolation keeps audio clear at lower volumes
  • 112 dB sensitivity delivers loud sound with less power
  • 16 g lightweight build stays comfortable all day
  • 2 m tangle‑free cord with gold‑plated 3.5 mm jack
  • Three silicone tip sizes give a secure custom fit

Wired In-Ear Design for Everyday Listening

The Betron B25 are wired in-ear headphones built for listeners who want a simple, plug-and-play connection. They use a standard 3.5mm gold-plated jack and a 1.2-meter tangle-free braided cable. The lightweight aluminum housings weigh 16 grams and include a carrying case for protection. No microphone or inline controls are fitted, keeping the operation straightforward.

Suits Listeners Wanting Pure Audio Without Extras

These suit anyone who prefers a direct wired link to phones, tablets, laptops or game controllers with a compatible 3.5mm port. They are not for buyers who need a built-in microphone for calls, inline volume or track controls, or wireless freedom. Users requiring active noise cancellation or a different connector type should look at other models.

Silicone Tips and Case Improve Fit and Portability

Three sizes of silicone ear tips (S/M/L) are bundled to help you secure a comfortable, noise-isolating seal that blocks ambient sound. The included carrying case stores the earphones and spare tips neatly, protecting the aluminum housings and braided cable during transport. These accessories directly affect daily comfort and the effectiveness of the passive isolation.

How it compares

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

Price $19.99
Cheaper than about 60% of the 7,078 comparable items (median $25.99).

Specifications

Product
Brand nameBetron
Model nameB25, B25GM
Part numberB25
Product typeIn-Ear
Product colorBlack
Audio & video
Driver size9 mm
Frequency range20000 Hz
Headphone styleIn Ear
Impedance16 ohms
Signal-to-noise ratio112 decibels
Audio sensitivity112 decibels
Wearing styleSingle Ear
Noise cancellationSound isolation
Mic impedance16 ohm
Mic frequency response20000 Hz
Mic signal-to-noise ratio112 decibels
Mic sensitivity112 decibels
Ports & slots
Connection3.5 mm
Power
Power supplyNo
Size & build
Cord lengthProtective Case
Product weight16 g
Compatibility
Compatible withWireless
Supported platformsCertified for Windows Vista
In the box
In the boxEarphones, Eartip, Protective Case, User Manual

Questions about this item

Do I need a device with a 3.5 mm headphone jack to use these earphones?

Yes, the Betron B25 connects through a standard 3.5 mm gold-plated plug, so the source device must provide that jack or a compatible adapter.

Will the 16 ohm impedance work well with my older MP3 player or laptop?

The 16 ohm input impedance is designed for easy driving by portable players, laptops, tablets and similar low-power outputs without an external amplifier.

How can I confirm the earphones are reproducing the full 20 Hz to 20000 Hz range after I plug them in?

Play a frequency-sweep test track; you should hear continuous output from the lowest bass up to the highest treble without obvious gaps or distortion.

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