Submersible to 33 ft. (10 m) depth 1'' Weaver or MIL-STD-1913 rail 20 daylight settings - 10 additional settings for Gen I through III+ night vision devices Two 1.5 V AA batteries - Supports lithium, alkaline, or rechargeable Are you a sportsman interested in hunting with night vision? Give the 552 another look. The 552 is EOTech's most affordable night vision-compatible sight and it partners with most night vision-devices. The 552 is designed to increase your speed to target even after the sun goes down.