Primary Function: Digalase tsa letsatsi Book Text: No. 2 ke digalase tsa letsatsi tse etselitsoeng ho ba matla le ho phutholoha. Foreimi e entsoe ka tšepe e sa hloekang (stainless steel) e tšesaane haholo ea Japane ea 0.5 mm e nang le shape-memory, e bopiloe ka ho koba le ho mena ntle le ho kopanngoa ka welding kapa likurufu. Hinge e koaleang e senang likurufu e emetseng patent e nkela likurufu tsa setso le libarrel hinges sebaka, kahoo li-hinge li ke ke tsa iketsa tsa lokoloha ebile likurufu li ke ke tsa oa. Foreimi e boima ba lidram tse 18. Lense tsa polycarbonate li hanela likotsi tsa ho robeha ebile li thibela mabone a ultraviolet. Li-nose pad tsa silicone ea maemo a bongaka le lintlha tsa temple ha li bake allergy.