Length: 6.25in (159mm) Diameter: 0.61in (15.5mm) Weight 2.3 oz (65 grams) with light guide The Microlux DW uses dual wavelengths to detect abnormal conditions quickly and safely through white light transillumination and blue light fluorescence (visualize bacteria). It is Easy, Safe, and Efficient for everyday use. Simple color evaluation is intuitive and focused for all treatment protocols. Rechargeable battery.