Garmin Watch Fenix 5X Plus Sapphire Slate Grey Brown Leather Band  010-01989-03. For athletes and outdoor adventurers who want the ultimate in a multisport on wrist trainer, the ultra rugged fenix 5X Plus is here. Its the first Fenix watch to offer a wrist based Pulse Ox sensor that lets you monitor blood oxygen saturation while you are sleeping, or spot check your oxygen levels and altitude acclimation anytime during the day. Other highlights include routable colour TopoActive Europe maps, wrist heart rate, a music player that lets you store and enjoy up to 1000 songs, plus Garmin pay, the contactless payment solution.