"Maximizing Battery Life: The Dual-Engine Design of the OnePlus Watch 2"

The author took a trip to Europe without the charger for the OnePlus Watch 2, testing its battery life. Despite forgetting the charger, the watch lasted about 83 hours, with nearly half of that in a limited power-saving mode. The dual-OS strategy allowed the watch to remain functional for an extended period, showcasing impressive endurance. The author noted a 30% battery drop during a flight but concluded that the OnePlus Watch 2's battery life outperformed other smartwatches in a similar situation. The watch is launching for $299, and a full review is forthcoming.