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Black single-ear in-ear headset with matching charging case, matte finish

No Sew

No Sew YYK-520 Bluetooth 6.1 Headset Black 72h Case

SKU CH-HM6Q-EYRAX

In-ear mono headset with active noise cancellation and Bluetooth 6.1, 72-hour case, 10-metre range, 1.5-hour charge

  • Headphone styleIn Ear
  • Impedance32 ohms
  • Power supplyBattery, true
  • ConnectionNo Jack
  • Wearing styleOver ear
  • Noise cancellationActive
  • Crystal-clear calls via ENC dual-mic noise reduction
  • 72 hours total playtime with LED charging case
  • Fast, stable Bluetooth 6.1 connection to all devices
  • Lightweight single-ear comfort for all-day wear
  • One-touch voice assistant and mute button control

Single-Ear Wireless Headset

The No Sew YYK-520 is a monaural Bluetooth 6.1 headset built for hands-free calls. It targets truck drivers, remote workers and office professionals who need clear voice pickup without blocking both ears. The in-ear design sits on one side and pairs with phones, laptops or tablets for Zoom, Teams or mobile use.

72-Hour Case and Low Power Draw

A 500 mAh charging case stores enough energy for 72 hours of total operating time. The earpiece itself recharges in 1.5 hours via the case USB-C port. Bluetooth 6.1 reduces idle consumption, so the system stays ready through long shifts without daily wall charging. Active noise cancellation on the microphone circuit runs from the same battery.

ENC Dual-Mic Noise Cancellation

The deciding spec is the CVC 8.0 plus DSP engine with two microphones that suppresses cab, traffic or office background noise during calls. If your workflow demands stereo music or over-ear isolation, this single-ear form factor will not meet that need.

How it compares

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

Price $27.99
Typical for this category: the median of 7,078 items is $25.99.

Specifications

Product
Brand name1MORE
Model nameYYK-520
Part numberYYK-520
Product typeIn-Ear
Product colorBlack
Performance
Supported distance10 m
Audio & video
Headphone styleIn Ear
Impedance32 ohms
Wearing styleOver ear
Noise cancellationActive
Mic impedance~3K ohm
Connectivity
Wireless technologyBluetooth
Ports & slots
ConnectionNo Jack
Power
Power supplyBattery, true
Battery pack72 h
Run time72 h
Charging time1.5, 1.5 h
Built-in batteryBattery

Questions about this item

How do I pair the YYK-520 headset using Bluetooth 6.1 and what step do users often miss?

Turn on the headset to enter pairing mode, then select it in your device's Bluetooth menu. The step often missed is placing the earpiece back in the 500mAh charging case first to ensure it has sufficient charge before pairing.

What maintenance will the 500mAh charging case and earpiece battery need over time?

Recharge the case via its USB-C port when the LED display shows low power. Clean the charging contacts on both the earpiece and case regularly with a dry cloth to maintain reliable 72-hour total playtime.

At what distance does the Bluetooth 6.1 connection become unstable during sustained use?

The wireless range is rated at 10 meters. Connection stability may decrease beyond this distance or when obstacles block the signal between the headset and paired device.

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