Track cycling, running or motor sports with the Billow XSG50PRO GPS smartwatch. It offers GPS navigation, heart‑rate monitoring, calorie burn, altimeter and compass, plus 1000 lap history on a clear LCD. The 280 mAh battery keeps it powered for days, while its splash‑proof design and 1 m water resistance let you train in any weather. Bluetooth 4.1 connects seamlessly to your phone for real‑time data transfer.