Yokoo has developed the “corrosiveness-proof nickel free connector.”

The usual connector uses nickel in order to raise corrosiveness-proof and endurance.

Nickel is not being used for new connector.

By giving specific plating to the connector top layer, it has raised the corrosion-proof performance.

There is also no allergy to metal thanks to no nickel。

It is the best also for the wearable device which may touch skin directly.