Each product has a unique model number. A model number usually starts with letters followed by series of numbers, e.g. GC6440, 37PFL7403D/10 or SA1300/02.
There are a few different ways you can locate your model number:
Look on the box
Look inside the product
Look on the product
Look on the manual
Non-spill, easy-sip spout
Compatible with Philips Avent bottles and cups
All Philips Avent bottles and cups are compatible excluding the glass bottles and the Grown-up cups/My First Big Kid Cups. So you can mix and match to create the perfect cup, suiting your toddler's individual development needs.