Ever since they came out there seemed to be good ones and faulty ones, my first was a faulty one which got sent back for repair in came back still with the same problem it kept freezing and had to be turned off and on again but still a pain in the butt, so it went back a 2nd time with a nasty note saying shove this one where the sun doesn't shine and send me a new unit, they sent me a brand new unit and upto today its been faultless, 16-18 hours on a full charge ,the daytime clarity will never compare to a normal scope as its digital on 8x mag or below it is pretty clear tho after 8x mag it