... Intensity Light (cheap units have only on/off), Halogen Bulb (cheap units have a low intensity incandescent), ... and 100x objectives to protect slidesIlluminationVariable intensity 12W tungsten halogen transmitted base illuminationMost similar looking compound microscopes ... 100x oil immersion objective, dust cover, extra halogen bulb and fuseOther SpecificationsManufactured under ISO: 9001 Standards110 ...