Tec N Trend DataGadgetsOct 7 Garmin Enduro 4 claims 36 days of smartwatch battery, 17x Apple Watch Ultra 4Same-mode comparison of vendor claims; Gizmodo's 320-hour headline is an activity-mode-with-solar figure, not everyday use. 36 daysEnduro 4, smartwatch modeClaimed battery life, everyday smartwatch mode 7 sourcesSaveShareRead