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Black USB-C wired in-ear earphones with inline remote and microphone

SuperTooth 421-1 USB-C Wired Earphones Black

SKU CH-CFY9-R7HEX

USB-C wired in-ear earphones with built-in DAC, microphone and inline remote for call and playback control

  • ColorBlack
  • Specificationsiphone, HopePow, 421-1, White, 1 ohm, sound_isolation, Wired
  • CompatibilitySmartphones, Tablets, Laptops, Other Electronic Devices
  • Featuresremote, Wired, waterproof, In Ear
  • Dimensions14.33in W x 12.83in H x 9.06in D
  • Weight0.032 kilograms
  • Pure HiFi stereo sound via built-in digital DAC chip
  • Clear calls with HD microphone and in-line volume controls
  • Ergonomic in-ear fit reduces fatigue during long sessions
  • Anti-knot cable design stays tangle-free in daily use
  • USB-C plug-and-play across smartphones, tablets and laptops

USB-C Wired Earphones for Modern Devices

These SuperTooth 421-1 earphones connect via USB-C to recent smartphones, tablets and laptops. They suit commuters, office workers and students who want a simple plug-and-play audio solution without pairing or charging. The in-line remote handles calls, volume and track control. The in-ear design aims to reduce fatigue during long sessions.

Replaces Wireless Buds When Simplicity Wins

Switch from Bluetooth sets if you dislike battery anxiety, pairing steps or occasional latency. The wired link delivers consistent stereo sound with a built-in DAC chip and needs no power of its own. The jump is worth it when you value zero-setup reliability over cable-free freedom, especially during travel or long work calls.

Plug Straight Into a USB-C Port

Insert the connector firmly into the device's audio port and select ear tips that seal your ear canal for isolation. The flat cable resists tangling and rolls up easily. Common issues include debris in the port causing intermittent sound, excessive cable tension damaging the joint, and moisture exposure degrading the remote over time.

Highlights

  • Pure HiFi stereo sound via built-in digital DAC chip
  • Clear calls with HD microphone and in-line volume controls
  • Ergonomic in-ear fit reduces fatigue during long sessions
  • Anti-knot cable design stays tangle-free in daily use
  • USB-C plug-and-play across smartphones, tablets and laptops

Specifications

BrandSuperTooth
Seriesiphone
Modeliphone
Part Number421-1
ColorBlack
Specificationsiphone, HopePow, 421-1, White, 1 ohm, sound_isolation, Wired, dynamic_driver, remote, 0.01 L x 0.01 W x 0.01 H inches, 0.032 kilograms
CompatibilitySmartphones, Tablets, Laptops, Other Electronic Devices
Featuresremote, Wired, waterproof, In Ear
Dimensions14.33in W x 12.83in H x 9.06in D
Weight0.032 kilograms

Questions about this item

What USB-C port size and cable length do I need to reach my device?

The earphones end in a USB-C plug that fits any standard USB-C audio port; the cable is 14.33 inches long.

Which step do people skip when fitting the ear tips?

Many forget to gently twist each tip onto the earbud until it seats firmly, which is essential for comfort and noise isolation.

When should I replace the silicone ear tips?

Replace the tips when they lose elasticity, show tears, or no longer seal in the ear canal, typically after several months of daily use.

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