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Black open-ear headphones with flexible earhooks, inline mic and clip, 3.5 mm plug

No Sew

No Sew YS4 Open-Ear Headphones 14mm 3.5mm 26g Black

SKU CH-TZQW-MCDJ7

Open-ear on-ear headphones with 14 mm drivers, 3.5 mm plug, inline mic and clip weighing 26 g

  • TypeOn-Ear
  • ColorBlack
  • Driver Unit14 millimeters
  • THDOn Ear
  • Input Impedance16 ohms
  • Signal to Noise Ratio(SNR)95
  • Open-ear design keeps ear canal free for situational awareness
  • 14 mm drivers deliver clear audio with minimal sound bleed
  • Flexible ear-hooks provide secure fit during vigorous activity
  • 5 mm wired connection works instantly with compatible devices
  • Weighs 26 g for all-day comfort without ear fatigue

Open-Ear Design for Situational Awareness

The No Sew YS4 headphones use an open-ear architecture that rests outside the ear canal. This design suits listeners who dislike in-ear buds, including people with small or sensitive ears. The 14 mm drivers deliver audio while the ear remains unblocked, preserving awareness of traffic, conversations or announcements during outdoor activities or office work.

Lightweight Wired Connection with Inline Controls

Weighing 26 grams, the headphones connect via a 3.5 mm plug that requires no battery or pairing. A 16 ohm impedance and 95 dB/mW sensitivity allow adequate volume from portable sources. The cable includes a push-button remote for playback and calls, plus a clip to manage slack. No active noise cancellation is present, so ambient sound passes through naturally.

Balanced Sound Signature Without Heavy Bass

The dynamic drivers are tuned for clear mids and highs rather than low-frequency impact. At sustained listening levels the open construction avoids the pressure buildup common with sealed buds, reducing fatigue during long sessions. Microphone sensitivity and SNR are both rated at 95, providing intelligible voice pickup for calls. The sound profile is not intended for bass-focused genres.

Highlights

  • Open-ear design keeps ear canal free for situational awareness
  • 14 mm drivers deliver clear audio with minimal sound bleed
  • Flexible ear-hooks provide secure fit during vigorous activity
  • 5 mm wired connection works instantly with compatible devices
  • Weighs 26 g for all-day comfort without ear fatigue

Specifications

BrandJoysico
ModelYS4
TypeOn-Ear
ColorBlack
Driver Unit14 millimeters
THDOn Ear
Input Impedance16 ohms
Signal to Noise Ratio(SNR)95
Sensitivity95 dB/mW
Connector3.5mm
Ear Couplingopen_ear
Weight26 grams
Noise Cancellingnone
Microphone Impedance16 ohm
Microphone Signal to Noise Ratio(SNR)95
Microphone Sensitivity95
Featuresnone, Tangle Free, Button Control, push_button, Wired, On Ear, dynamic_driver, 16 ohm, Clip
Package ContentsClip, Protective Case

Questions about this item

How do I clip the cable so it does not pull the 14 mm drivers off my ears?

Slide the supplied clip onto the cord near the Y‑split, then fasten it to your collar or sleeve; the 26 g earpieces stay seated on the ear hooks without cable tug.

What part will wear out first and need replacing on the YS4?

The 3.5 mm plug and the inline button control see the most flex cycles; the 16 ohm driver units themselves have no moving parts to degrade.

At what volume does the 95 dB/mW sensitivity hit the 10 % THD limit during a long session?

The 16 ohm load reaches the rated distortion threshold well before ear‑damage levels, so the practical ceiling is set by the open‑ear design, not the amplifier.

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