We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Black open-ear earbuds with over-ear hooks and USB-C cable

No Sew

No Sew Resolve ADHF-C191 USB-C Open-Ear Earbuds Small-Medium

SKU CH-0TXX-0XEPT

USB-C wired open-ear earbuds with in-line mic and controls, designed for small-to-medium ears under 2.5 inches

  • Headphone styleOpen Ear
  • Impedance16 ohms
  • ConnectionUSB
  • Wearing styleOpen ear
  • Wireless technologyIR
  • Mic impedance16 ohm
  • Open-ear design keeps you aware of surroundings
  • USB-C wired connection works with iPhone 15, 16, 17 and Android
  • Built-in microphone and in-line controls for clear calls and playback
  • Small-Medium fit suits ears under 2.5 inches
  • Dynamic driver with 16 ohm impedance delivers clear sound

Wide USB-C Compatibility

These Avantree Resolve ADHF-C191 earbuds connect through a USB-C plug and work with iPhone 15, 16 and 17 series, Android smartphones and tablets. The open-ear design keeps the ear canal free so you stay aware of your surroundings while listening.

Sized for Small-Medium Ears

The small-medium fit suits ears up to 2.5 inches in length and replaces in-ear tips that can cause pressure or fatigue after long sessions. Choose the large version instead if your ears measure more than 2.5 inches from top to bottom.

Wired USB-C Limits

The USB-C cable removes the need for charging but tethers you to the device and occupies the port so you cannot charge the phone at the same time. There is no active noise cancellation and the microphone impedance is 16 ohm for basic call clarity.

How it compares

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

Price $39.99
Pricier than about 65% of the 7,078 comparable items (median $25.99).

Specifications

Product
Brand nameAvantree
Product line191
Model nameResolve, ADHF-C191
Part numberADHF-C191
Product typeOn-Ear
Product colorBlack
Audio & video
Headphone styleOpen Ear
Impedance16 ohms
Wearing styleOpen ear
Noise cancellationNone
Mic impedance16 ohm
Connectivity
Wireless technologyIR
Ports & slots
ConnectionUSB
Power
Power supplyNo

Questions about this item

Will the ADHF-C191 fit ears smaller than 2.5 inches?

The Small-Medium model is designed for ears under 2.5 inches (6 cm) measured top to bottom; the comparison table confirms this fit range.

How do I plug the USB-C connector in correctly?

Insert the USB-C plug fully until it clicks into the port; the in-line controls and microphone only activate when the connection is fully seated.

When should the silicone earhooks be replaced?

Replace the soft silicone earhooks if they lose grip, show tears, or no longer hold the open-ear drivers securely outside the ear canal.

More in Earbuds & Over-Ear Headphones

Similar items