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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

  • TypeIn-Ear
  • ColorOff White
  • Driver Unit13 millimeters
  • THDIn Ear
  • Signal to Noise Ratio(SNR)35 decibels
  • Power Supplylithium_polymer, nonstandard_battery, true
  • 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%.

Highlights

  • 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%

Specifications

BrandMatast
ModelC16
Part NumberC16
TypeIn-Ear
ColorOff White
Driver Unit13 millimeters
THDIn Ear
Signal to Noise Ratio(SNR)35 decibels
Power Supplylithium_polymer, nonstandard_battery, true
Sensitivity35 decibels
ConnectorNo Jack
Ear CouplingSingle Ear
Cord LengthCable
Weight1 grams
Noise Cancellingsound_isolation
Wireless TypeBluetooth
Battery8 hours
Operating Time8 hours
Charge Time1.5 hours
Distance15 meters
Microphone Signal to Noise Ratio(SNR)35 decibels
Microphone Sensitivity35 decibels
Featuressound_isolation, 5.4, 8 hours, Detachable, Touch Control, touch, Wireless, In Ear, dynamic_driver, 15 meters, Wireless earbuds *2 (L/R)
Package ContentsWireless 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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