Amazon has 49mm Apple Watch Ultra 2 GPS + Cellular Smartwatch w/ Rugged Titanium Case & Indigo Alpine Loop (MRET3LL/A, Medium) for $663.99. Shipping is free.

About this item:

• Rugged, capable, and built to meet the demands of endurance athletes, outdoor adventurers, and water sport enthusiasts — with a specialized band for each. The S9 SiP enables a superbright display and a magical new way to quickly and easily interact with your Apple Watch without touching the display. Up to 36 hours of battery life and 72 hours in Low Power Mode.
• Features a 49mm corrosion-resistant titanium case. Large Digital Crown and Customizable Action button for instant control over a variety of functions. 100m water resistance.
• Apple's brightest Always-On Retina display is easy to see, even in direct sunlight. More room for adding complications to customize your watch face and enough space to view six metrics at once.
• Advanced metrics and views in the Workout app, including Heart Rate Zones, custom workouts, and new cycling workout views. Precision dual-frequency GPS provides incredible accuracy for calculating distance, pace, and route maps. Trail Loop is a light, thin, and flexible band, designed especially for all workout types.