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Off-white in-ear buds with earhooks and charging case

No Sew

No Sew Matast C16 Bluetooth 5.4 in-ear headphones off-white

SKU CH-P9H8-EARMS

Bluetooth 5.4 in-ear earbuds with 14.2 mm graphene drivers, ENC quad microphones, 60-hour case playback, IP7 waterproofing and USB-C fast charge

  • Driver size13 mm
  • Headphone styleIn Ear
  • Signal-to-noise ratio35 decibels
  • Power supplyLithium polymer, nonstandard battery, true
  • Audio sensitivity35 decibels
  • ConnectionNo Jack
  • Hi-Fi audio with 14.2 mm graphene drivers boosting frequency range by 70%
  • Bluetooth 5.4 chip cuts power use 45% and latency 35 ms versus 5.3
  • 60-hour total playtime from case plus 10-minute fast charge for 2 hours
  • IP7 nano-coating protects against sweat and rain during workouts
  • Four ENC microphones raise vocal clarity 75% and suppress background noise 80%

Matast C16 Bluetooth 5.4 Earbuds

The Matast C16 are wireless in-ear headphones built for sport and daily listening. They use Bluetooth 5.4 for stable connectivity up to 15 metres and feature IP7 waterproofing against sweat and rain. Each bud weighs 1 gram and uses a 13 mm driver with a triple-layer composite diaphragm.

Suited to runners and gym users wanting secure fit

The earhook design keeps the buds in place during movement, while the dual-use mode allows stereo or mono listening. Buyers who need active noise cancellation, multi-point pairing, or a higher IP rating for swimming should look elsewhere. The case provides up to 60 hours total playback.

8-hour single-charge battery life

Each earbud delivers 8 hours of playback per charge, and the USB-C case adds five full recharges for 60 hours total. A 10-minute fast charge yields 2 hours of use, while a full case recharge takes 1.5 hours. The dual LED display shows battery percentage from 1% to 100%.

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 nameMatast
Model nameC16
Part numberC16
Product typeIn-Ear
Product colorOff White
Performance
Supported distance15 m
Audio & video
Driver size13 mm
Headphone styleIn Ear
Signal-to-noise ratio35 decibels
Audio sensitivity35 decibels
Wearing styleSingle Ear
Noise cancellationSound isolation
Mic signal-to-noise ratio35 decibels
Mic sensitivity35 decibels
Connectivity
Wireless technologyBluetooth
Ports & slots
ConnectionNo Jack
Power
Power supplyLithium polymer, nonstandard battery, true
Battery pack8 h
Run time8 h
Charging time1.5 h
Size & build
Cord lengthCable
Product weight1 g
In the box
In the boxWireless earbuds *2 (L/R), Wireless Charging Case, Cable, User Manual

Questions about this item

How do I pair the Matast C16 earbuds to my phone for the first time, and what step is often missed?

Open the charging case lid, take out both earbuds and they enter pairing mode automatically; select "C16" in your phone's Bluetooth 5.4 menu — the step people miss is keeping the case lid open until the connection confirms.

What part of the Matast C16 will wear out first and need replacement?

The internal lithium-polymer batteries in each earbud and the case degrade with every charge cycle; the earbuds give 8 hours per charge and the case recharges them six times for 60 hours total, so battery life is the limiting factor.

What stops me using the Matast C16 continuously during a long run or shift?

Each earbud runs for 8 hours on a single charge; after that you must return them to the case for a 1.5-hour recharge, so the 8-hour per-bud limit is the first constraint under sustained use.

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