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Small white in-ear wireless earbuds with matching charging case

Ruth's sister

Ruth's sister A13 Portable Wireless Earphones Bluetooth 5.1 CVC8.0 Noise Reduction Stereo

SKU CH-4VFA-G5N28

Bluetooth 5.1 true-wireless earphones with CVC 8.0 noise reduction, IPX7 waterproofing and dynamic drivers for sport and daily use

  • Bluetooth 5.1 delivers fast, stable wireless streaming
  • CVC 8.0 noise reduction keeps calls clear in noisy places
  • IPX7 waterproof rating survives sweat, rain and shower splashes
  • Ergonomic in-ear design stays comfortable during long sports sessions
  • Touch controls let you manage playback without reaching for your phone

True Wireless Earphones for Sports

The A13 earphones use Bluetooth 5.1 for a stable wireless link with phones and tablets. An IPX7 rating protects the buds against sweat and rain during workouts. CVC 8.0 noise reduction and DSP processing aim to deliver clear stereo sound with heavy bass. Touch controls handle playback and calls without reaching for the device.

Bluetooth 5.1 Range and Codec Limits

The 5.1 standard caps reliable range at roughly ten metres in open space. Walls or body mass cut that distance further. No advanced codecs such as aptX or LDAC are listed, so audio streams over the basic SBC profile. Active noise cancellation relies on software processing rather than hybrid hardware, limiting low-frequency isolation compared with larger over-ear designs.

In-Ear Fit and Touch Operation

Three ear-tip sizes are typically supplied to seal the canal; a poor seal loses bass and lets noise in. Touch panels respond to taps and holds, but wet fingers or gloves can cause misreads. The case charges via the included cable; there is no wireless charging pad support. The companion app enables firmware updates and EQ tweaks, yet it is not required for daily use.

Highlights

  • Bluetooth 5.1 delivers fast, stable wireless streaming
  • CVC 8.0 noise reduction keeps calls clear in noisy places
  • IPX7 waterproof rating survives sweat, rain and shower splashes
  • Ergonomic in-ear design stays comfortable during long sports sessions
  • Touch controls let you manage playback without reaching for your phone

Specifications

No published specifications for this item yet.

Questions about this item

Should I pick the version with Bluetooth 5.1 or an older Bluetooth version?

This model only comes with Bluetooth 5.1, so there is no older Bluetooth version to choose.

What does the 20-20000 Hz frequency response mean for daily listening?

It covers the full range of human hearing, so music, calls and game audio all reproduce bass, mids and treble without obvious gaps.

How does Bluetooth 5.1 affect connection stability and audio quality?

Bluetooth 5.1 gives faster pairing, a more stable link and lower latency, while audio quality still depends on the source device and the codec it supports.

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