It looks like the initial text had a typo and mentioned the MD01WO-0814, but you want to update the text for the MD01WO-1004 with the G101 movement and a sapphire case back. Here is the combined and rephrased text with all of the requested information. The Perfect Fit: The ELKA D-Series MD01WO-1004 The ELKA D-Series has always been about a feeling—the satisfying, organic feel of a lucky pebble in your palm. Now, that same classic design, inspired by the elegant lines of vintage pocket watches and brought to life with our "Form Follows Feelings" philosophy, is available in a new, more refined size, complete with a distinctive bracelet. Meet the ELKA MD01WO-1004, the medium-sized counterpart to the popular D-Series model D01-1003. This 36mm timepiece maintains all the hallmarks of the D-Series legacy, but with a more subtle and versatile presence on the wrist. It’s the ideal fit for those who appreciate the understated elegance of a more compact watch without sacrificing a single detail of its heritage. This model features a beautiful and comfortable "rice grain" metal bracelet that adds a touch of vintage flair and exceptional wearability. Beneath the beautifully vintage Chevé-box sapphire crystal, the MD01WO-1004 beats with the heart of Swiss precision. The timepiece is powered by the reliable La Joux-Perret G101 automatic movement, a finely tuned engine that is as beautiful to behold as it is precise. The watch case back is fitted with a sapphire crystal, offering a captivating and rare view into the meticulously decorated movement within. This visible display of craftsmanship adds a new dimension to the watch, inviting you to appreciate the intricate dance of gears and springs that powers every moment.