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Two small magnetic USB-C adapters with blue LED indicators, one horizontal and one vertical four-pin rhomboid connector

Fervit

Fervit Magnetic Charging Adapter USB-C to 4-Pin S70 2pcs

SKU CH-AQ8Z-KY3B1

Two magnetic USB-C adapters with horizontal and vertical 4-pin rhomboid contacts charge compatible S70 bone-conduction headphones at up to 5 V 1.0 A while an LED shows power status

  • Secure magnetic hold with safe-release design
  • Two contact layouts cover horizontal and vertical S70 ports
  • Blue LED shows charging status at a glance
  • 5 mm pin spacing ensures reliable fast charging
  • USB-C input delivers up to 5V 1.0A power

What the adapter does and who needs it

This Fervit set includes two magnetic charging adapters that convert a USB-C source to the 4-pin rhomboid connector used by the S70 bone-conduction headphone. One adapter has a horizontal pin layout and the other a vertical layout, so either orientation on the headband is covered. The pair suits anyone who has lost or damaged the original proprietary cable and wants a replaceable magnetic link. It is not for owners of headphones that use a different pin count, spacing, or proprietary docking cradle.

Behaviour under sustained load

The adapter is rated for a maximum of 5 V at 1.0 A, so it will maintain that current continuously while the headphone battery charges. The magnetic suction holds the connection firmly during normal desk or bedside use, yet it releases if the cable is pulled sharply, preventing stress on the headphone housing. A blue LED stays lit while power flows, giving a constant visual confirmation that charging is active throughout the whole cycle.

Installation and common pitfalls

Alignment is straightforward: match the 2.5 mm pin spacing on the adapter to the contacts on the S70 and let the magnets snap into place. The two included orientations cover both horizontal and vertical contact arrays, so no guesswork is required. The only common issue is attempting to force an adapter onto a headphone model with a different pin pattern or spacing, which will not connect and could bend the delicate pins.

Highlights

  • Secure magnetic hold with safe-release design
  • Two contact layouts cover horizontal and vertical S70 ports
  • Blue LED shows charging status at a glance
  • 5 mm pin spacing ensures reliable fast charging
  • USB-C input delivers up to 5V 1.0A power

Specifications

BrandFervit

Questions about this item

Does the adapter get warm or draw much power when left plugged in all day?

It runs from a 5 V 1.0 A Type-C supply, so heat and draw stay very low even with continuous use.

What must I already own to use these magnetic tips?

You need a USB-C charger or port that can deliver 5 V at 1.0 A and headphones with the matching 4-pin 2.5 mm rhomboid layout.

Will the 2.5 mm pin spacing work with older bone-conduction models I still have?

The two included tips cover both horizontal and vertical 4-pin rhomboid patterns at 2.5 mm spacing, so they fit compatible S70-era headsets.

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