SL Series Binocular Loupes are designed only for optical magnification during examinations. They are lightweight and ergonomically superior. The telescopes are recommended for those seeking the possibly best posture during use. These Galilean-style flip up loupes boast an impressive 4.6 inches viewing area. They feature vertical, interpupillary, and drownward angle adjustment for maximum versatility. ? SL Series Binocular Loupes are designed to meet all medical needs. They are widely accepted by dental, ENT, stomatology, Gynecology, Cardiology, Brain surgical and Plastic surgery, etc.