UVB10.0 SPIRAL ENERGY SAVING LAMP15W. It is suitable to Pogona viticeps, king, sulcatta tortoise, radiation,encore leopard tortoise, ,medvetskayagrydaand other tortoises and frilled lizzard. Tega and various desert reptiles. It combines with calcium powder to induce the ativation of D3, promote the transformation of calcium in bone and blood. it improves appetite, makes the animals active to induce coupling behavior. effective scope 30-50cm. it is recommended to be combined with UVB5.0. the UV ray energy saving bulb may be connected with desert environment, thus the UV ray output rate is very high. desert area is partly cloudy and dry with less vegitation and trees, and more sunlight than other areas. the animals in desert will be more exposed in UV ray than other region.