Despite the name, the product page lists a stainless steel tank and shell for the black titanium series. What sets it apart is the control set: a 0–30 min digital timer, a 20–80 °C digital thermostat, and degassing and full-wave/half-wave functions. Sizes run from 2 L (JPS-10AH) to 30 L (JPS-100AH), with a stamping-formed tank without weld seams, a drain ball valve from 6 L and cooling fans from 10 L.