I had an excellent experience purchasing my Audemars Piguet Royal Oak from Watch My Diamonds, and I want to give a special thank you to Mary and Daniel for making the entire transaction so enjoyable. When you’re making a significant purchase remotely, trust and communication matter, and they made me feel comfortable from the beginning. Daniel was very communicative, personable, and easy to work with. He sent clear photos and videos that accurately showed the watch and its condition. When it arrived, it was exactly what I had expected and in great condition. I really appreciated knowing that what I was seeing in the photos and videos was what I would actually receive. He also took my wrist size ahead of time and made sure the watch was properly sized before shipping it. It arrived fitted and ready to wear, which was a thoughtful touch. Being able to put it on immediately and enjoy it made the experience that much better. Daniel shipped the watch immediately, and his follow-through was excellent. The same care he put into communicating with me carried through to preparing and shipping the watch. Mary was also wonderful in helping facilitate the sale, and I appreciated how easy they both made the process. One of my favorite parts of the experience was that we even nicknamed my watch “the Unicorn” because of its rarity. That little detail made the purchase feel personal and memorable. It was fun to share the excitement of finding such a special piece with the people helping me buy it. The watch is beautiful, but Mary and Daniel’s service is a big reason I would come back. They made me feel valued as a customer, and the experience left me wanting to purchase from them again. Thank you, Mary and Daniel, for the great communication, accurate photos and videos, immediate shipping, and attention to getting the fit right. I’m extremely happy with my Unicorn and would highly recommend Watch My Diamonds to anyone looking for a special watch and people who make the buying experience just as enjoyable.

Breitling Professional Endurance Pro X823101C1B1S1 44mm University of Michigan™ Black Dial Bi-directional Bezel in Blue Rubber Strap Watch
Authenticity Guaranteed
2-Year Warranty
Secure Checkout
Fully Insured Shipping
30-Day Returns
Dedicated Watch Specialist
The Breitling watch features a high-performance Breitling 82 caliber with a thermocompensated SuperQuartz™ movement, offering exceptional accuracy far surpassing standard quartz. It includes a 1/10th second chronograph with a 30-minute counter and 4 jewels for smooth functionality. The timepiece is equipped with a dial aperture calendar and a screw-fastened caseback, ensuring durability. Water-resistant up to 10 bars, it also boasts a bidirectional bezel with a compass scale and a non-screw-locked crown with two gaskets for added protection.
Encased in a 44 mm diameter body with a 12.5 mm thickness, this lightweight watch weighs approximately 64.5 g in total, with the watch head at 35.5 g. It features a sapphire crystal that is glareproofed on both sides for optimal visibility. The 22 mm lug width connects to a stylish blue rubber strap with a straight design, ending in a tang-type buckle made of durable material and measuring 20 mm. Combining sporty elegance with rugged functionality, this watch is built for precision and adventure.
| Original Box | Yes |
|---|---|
| Original Papers | Yes |
| Gender | Male |
| Model | X823101C1B1S1 |
| Product Year | 2025 |
| Condition | Unworn |
| Series | Professional |
| Movement | Thermocompensated SuperQuartz |
| Crystal | Scratch Resistant Sapphire |
| Dial Type | Analog |
| Dial Color | Black |
| Dial Markers | Arabic Numerals |
| Hands | Luminescent silver-tone hands |
| Functions | Chronograph, Date, Hour, Minute, Second |
| Case diameter | 44 MM |
| Case Shape | Round |
| Bezel | Bi-Directional Rotating |
| Band Type | Strap |
| Band Color | Blue |
| Band material | Rubber |
| Clasp | Tang Clasp |
| Water Resistance | 100 meters / 330 feet |
Free, fully insured worldwide shipping. Every order ships signature-required and insured for its full value, typically arriving within 1–2 business days domestically.
30-day returns. Return within 30 days in original condition for a full refund. Pay by bank wire to save an additional 3%.









