Optimal 458 nm Wavelength: The LEDs focus tightly on the optimal wavelength (450 ~ 465nm) for maximizing bilirubin metabolism. Ideal Irradiance Levels: With an optional digitally adjustable six level irradiance, the unit allows treatment tailored to each patient's needs. Uniform Light Distribution: The optical design ensures uniform light distribution to patient's exposed surface area, maximizing bilirubin breakdown. Whisper-quiet operation: Designed with no fan and no other mechanical moving parts, it operates significantly quieter than any other brand of phototherapy. No Spill & No Glare: Innovative optical design minimizes the light spilled outside the bed so neither caregivers nor other patients receive undesired exposure to light from LED