TweetNot sure how accurate it is, but for that price, its worth taking a chance on it. Compare the findings with other tests, like calipers. If it gives consistent answers, that are consistent day after day. Some testers are so crappy that one day it will have you at 10% BF and then the next day, you might be 6% or 13%. Then you know you have a bunk bf tester. Ive used a Futrex, which uses infra red. Its pretty consistent, but I know some people who are consistent with a cheap set of calipers