For the FY15.0013 model: 3. A separate **NIR wavelength and NIR irradiance are not currently specified** in the published product specifications. 4. The **total fluence/dose in J/cm² for a 10-minute session is also not currently available**, because an accurate dose calculation requires the measured skin-level irradiance in mW/cm². The listed 4W specification is the device’s total electrical power and should not be used to calculate skin-level fluence. For verified irradiance and dose test data, please contact **service@freyara.com**.