This vibration rod has three characteristics: individual vibration, individual expansion and contraction, and individual heating Individually design product sleeves to keep the product clean and hygienic at all times 10 vibration stretching modes Product operation instructions Please note that the heating time should not exceed 5 minutes. Thank you Product size Insert the needle into the empty space indicated in the picture, and the other section can be connected to a phone charging head or a computer USB port for charging There are two packaging methods for the product. One is the packaging box and a red storage bag. The other is simple packaging