Will my Delvfire work without a phone or tablet?

Your Delvfire will need to be set up using the accompanying VeryFitPro app on a compatible Apple or Android phone or tablet. Some of the features like connected GPS (if supported by your watch), message and caller alerts require you to have your phone/tablet within range for them to work. However, your watch will independently track things like steps, distance, sleep, heart rate (if supported) and sports (if supported) without needing to be near your mobile device.