Size - This terrarium heat emitter is 220-240 volts, 50 watts, fits all standard E27 sockets, heating surface diameter: 7.5cm. Material - This reptile heat lamp is made of solid ceramic element, durable material lasts a long time, perfect for high humidity terrariums. Reptiles - Infrared heat lamp will warm the reptiles very effectively. Infrared heat penetrates scales and skin tissue, promoting health and healing by widening blood vessels and increasing blood circulation. Wide Application - This ceramic heat emitter is the perfect round-the-clock heat source for reptiles and amphibians. Ideal for pets, chicken coops, chickens, lizards, turtles, birds, snakes, spiders, rabbits, chameleons, bearded dragons, etc.