This is a Gartner Superlux Ltd product made of grade 304 stainless steel.
It i operates on 230 volts and avoids the need for a transformer. It uses two GU10 LED lamps of up to 5 Watts each.
The lights tilt only up and down.
Grade 304 Stainless is not as corrosion resistant as grade 316 (marine grade)stainless which is two or three times the price.
You can expect many years of trouble free service from these lights. However in a seaspray zone the lights may discolour or form light corrosion. This can be removed with a scouring pad and the lights protected by spraying with clear lacquer.