Below is a photo example to help locate this information on your product.
The model information can be found on the back the packaging or stamped/embossed on the back of the product itself.
The model # will again with a BA. Some may be followed by a 3-4 letter color code.
The manufacture date/date code is typically noted in YY/MM/DD format followed by 2 letters. This will either be stamped into the back of the packaging like a notary seal or it can be labelled on the back of the item as shown in the photo.