1,binocular eyepieces 2, very light in LED lamp, 3, 10x.16x available, 4,two rechargeable ... : eyepiece:10×,16. Objective:1×,10×,16×compensation: ±5DDiameter of light: 0.1, 1, 3,10mmPupil distance: 45-70mmWorking distance: 78mmSlit ... PACKAGESL-3000 OTHER DESIGN PORTABLE SLIT LAMP Portable Slit lamp microscope LYL-S/SL3000