7% UV-B content to support species (crepuscular) specifically designed for Shade Dwelling ShadeDweller™ produces the perfect ratio of 17% UV-A and 7% UV-B for effective and natural Vitamin D3 production where an average UV Index of 0.80-1.00 can be achieved at 10”/25cm from the lamp. 7% UVB for the synthesis of vitamin D3 Produces a targeted flood of UV enabling the keeper to set a photo-gradient Long life, 12 month lifespan before a change is required Made in Germany by the worlds experts Full Spectrum lamp Flicker free (T5) UV-B 7% UV-A 17% Kelvin 6000K CRI 90> Diameter T5 Ø16mm