The Apple Watch Leather Link was an Apple Watch band released in 2020. The design is similar to the previous Leather Loop design. While the Leather Loop included a metal “eye,” the Leather Link is held solely by magnets.
Apple described the Leather Link:
“The Leather Link features handcrafted Roux Granada leather made in France. The strap elegantly wraps around the wrist and magically attaches with flexible moulded magnets that gently flex to help maintain a secure, comfortable fit throughout the day.”
This example is Chalk and was released in Spring 2021.
Source: Apple