Specifications:
Illumination form ---------- big spot, smll spot, slit, central network, red free
Diopter compensation --------- 0,+1,+2,+3,+4,+5,+6,+8,+10,+12,+16,+20,-25(D)
Illumination source ---------- 3.6V/2.6W halogen bulb
Power ----------- Vi-CD battery DC: 3.6V or AC adapter
