As Tan notes, the sculpture is a 2.6x scale model of the 42mm Apple Watch created from over 800 pieces of Nanoblock, which is a popular building block product in Japan, akin to LEGO. Tan says he's "been a long-time Apple fan" and is "eagerly anticipating the Apple Watch."
Tan has been creating Apple-related Nanoblock structures for a while now, last year debuting a 2,000-piece structure of the Fifth Avenue Apple Store, complete with the iconic glass cube entrance and descending spiral staircase. Tan's creations have earned him spreads in magazines and even award recognition in the Nanoblock company's own spotlight of the best creations and creators using the product.
Check out the rest of Tan's Nanoblock creations on his blog.