Police said he stole a Motorola smartwatch worth $249.99.
Now, Nassau County police are offering a reward -- if your information leads to his arrest.
The theft occurred at the Target store at the Broadway Mall in Hicksville at about 4:30 p.m. on Feb. 15, police said.
The man, seen in surveillance video, has a mohawk haircut and wore a black jacket, a white T-shirt, jeans and black shoes. Police said he took the watch, then exited the store "passing all points of purchase without attempting" to pay for the item he'd taken.
Police are asking anyone with information regarding the theft to call Crime Stoppers at 800-244-TIPS. All calls will remain confidential and callers are eligible for a cash reward for information leading to an arrest of the suspect.