I just figured out how to put my “physical fitness” bracelet to sleep…. instead of “tapping it twice” as the instructions stated to do, it responds to a “rapping with the knuckle”…. that’s right, I’m KNOCKING on the bracelet to put it to ‘sleep’, and to come out of the ‘sleep mode’… and, I’ve named my bracelet Walter… Comment below if you get my sense of humor. LOL.