Other mistake: When Mike calls home from the office on the rotary dial, his finger dials only two possible numbers 3,4 repeatedly. Not 762-0799 or 555-6161 the two numbers that the Bradys had during the run of the show. (00:17:15)
The Dropout - S2-E1
Other mistake: When Greg is in the kitchen getting ready to leave for the baseball game, there is a number 53 on the back of his jersey. In the following scene at the baseball park, there is another man with his back turned throwing practice balls, who also has the number 53 on the back of his jersey. It is clear that it is not the same person.
Answer: The dangling bracelet was used for dramatic purposes - to keep the audience on edge.