Final paragraphs below; also see Apple Watch Series 3 with LTE Review: Missed Connections (The Verge)
"Although I think most people can skip buying the cellular model, the Apple Watch Series 3 is the first smart watch I can confidently recommend that people buy. While I don’t personally find it attractive enough to replace my wristwatch, the new Apple Watch is a well-designed, durable and easy-to-use fitness tracker for people who want analytics on their workouts and general health (R.I.P., Fitbit).Apple Watch Series 3 Excels, Even if You Don’t Need Cellular - The New York Times
Important features like the stopwatch, calendar and Siri work quickly and reliably. And unlike its predecessors, the watch has impressive battery life — on average, I had more than 40 percent battery remaining after a full day of use.
So the final verdict? The Apple Watch Series 3 is the first sign that wearable computers are maturing and may eventually become a staple in consumer electronics."