The main difference between a smartwatch and an electronic watch lies in its capabilities and functionality. A smartwatch is a wearable device that goes beyond traditional timekeeping, offering advanced features like smartphone connectivity, app support, fitness tracking, and notifications. On the other hand, an electronic watch focuses primarily on accurate timekeeping with additional features such as alarms, stopwatches, timers, and backlights. While it may have some basic functionalities, an electronic watch does not offer the extensive connectivity and advanced features found in a smartwatch.