Based on this product's specifications, here are some alternatives and similar models
Smartwatch Apple Watch Ultra 3 49mm Black Titanium GPS Water Resistant
Summary description:
Apple Watch Ultra 3 is a 49 mm smartwatch in black titanium with built‑in GPS and water resistance. Designed for everyday use and outdoor activities, it offers fitness and health tracking, notifications, and extended durability from its titanium case. Suitable for tracking workouts, navigation, and staying connected while on the move.