Power is on for operational check (works without problems). Although it has not been used on animals, it has been tested, so it is listed as "Like New". Immediate purchase is OK. No price reduction. Product size (approx.): Diameter 60 x Height 105mm Power supply: AC 100V (50/60Hz) Rated power consumption: 40W Material: Heating bulb/glass, Heating wire/chromium, etc.