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
White wireless earbuds in rectangular charging case, matte finish

Ruth's sister

Ruth's sister K55 international power cord

SKU CH-JC58-ZXC2B MPN K55

True wireless earphones with Bluetooth5.0, active noise cancellation, and a built-in microphone for sport and calls

  • True wireless freedom with Bluetooth 5.0 stability
  • Active noise cancellation blocks background sound
  • Built-in microphone enables clear hands-free calls
  • Touch controls on the earbuds for quick access
  • Compact charging case fits pocket and bag

Wireless earphones for active use

The K55 TWS earphones use Bluetooth5.0 for cable-free listening during sport, travel or office work. A charging case powers the buds between sessions. Touch controls on the housing handle playback and calls without reaching for a phone. The in-ear fit aims to stay secure while moving.

Stable signal with active noise cancellation

An upgraded chip manages anti-interference to keep the Bluetooth5.0 link steady during sustained activity. Built-in microphones apply active noise cancellation to reduce background sound for clearer calls and music. Dynamic drivers deliver a 20-20Hz frequency response for bass-heavy output. The ABS construction resists daily knocks and sweat exposure.

Check Bluetooth version and charging habits

Verify your source device supports Bluetooth5.0 for full compatibility. The case charges the earphones, so confirm you can recharge the case itself between outings. No memory-card slot or companion app exists, so all control is via the touch buttons. The product is not waterproof, so avoid heavy rain or submersion.

Highlights

  • True wireless freedom with Bluetooth 5.0 stability
  • Active noise cancellation blocks background sound
  • Built-in microphone enables clear hands-free calls
  • Touch controls on the earbuds for quick access
  • Compact charging case fits pocket and bag

Specifications

No published specifications for this item yet.

Questions about this item

Do the K55 earphones generate noticeable heat or noise while charging in the case all day?

The K55 earphones charge inside a compact 83 mm by 45 mm by 32 mm case using Bluetooth 5.0, and true wireless in-ear buds produce no audible fan noise or significant heat during extended charging.

What must I already own to use the K55 earphones for calls and music?

You need a Bluetooth 5.0 compatible smartphone, tablet or computer to pair with the K55 earphones, as they are true wireless with a built-in microphone and no wired fallback.

Will the K55 earphones pair reliably with a phone that only supports Bluetooth 5.0?

Yes, the K55 earphones use Bluetooth 5.0 for true wireless communication, so they connect directly to any device that also supports Bluetooth 5.0 without extra adapters.

New to this? Which coin should you pay with — what to check, what it costs to pay, and what is never asked for.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.