This mount was originally bundled with several mid-range TomTom models (circa 2010–2014), including the TomTom Start 60, Start 40, Via 1535, and Go Live 825. If you own a TomTom with a "click-and-go" magnetic-like mount that folds flat into the back of the device, you are using a version of the 4UUB.001.52.