Specs from OEM website - FEATURES Tasco 4 x 15 rifle scope has a one-piece body tube construction Full fogproof/waterproof integrity Non-removable eyepiece for improved sealing 1/4 MOA click adjustments Weight: 3.6 oz (102 g) Length: 10.7" (272 mm) Field of view: 17' at 100 yards (5 m at 91 m) Eye relief: 3-1/2" (89 mm) For use with .22 calibre rifles Calibrated for shorter distances