Nitrogen sealed, Hi-Resolution II lens, regulation 1/4 M.O.A. Ø 1".CLASSIC (4x40)SKU: 152311TECHNICAL CHARACTERISTICSPower: 4x Ø objetive: 40 mm. Finish. Matte Retícle: R4 Ø tube: 1". Nitrogen sealed, Hi-Resolution II lens, regulation 1/4 M.O.A. Ø 1".