RT 831 W

● Cov Khoom Siv: SS (18/0 lossis 18/8)

● Dial Lub ntsej muag: Φ83.1mm

● Temp. Kub: -30 txog 21 ° C / -20 txog 70 ° F

● Qhov tseeb: ± 2.5%

● Nrog hanger nuv lub ntsej muag mus rau sab laug lossis sab xis

● Tempered iav lens