Lifestyle brand GARRACK is no stranger to anime collaborations. Its past releases include an all-purpose kitchen knife modeled after the Scout Regiment’s Ultrahard Steel Blade from Attack on Titan and a Chainsaw Man smartwatch, earning plenty of attention for its playful crossover products.
Now, the brand is teaming up with the TV anime Mushoku Tensei for four character-themed smartwatches featuring Rudeus Greyrat, Sylphiette, Roxy Migurdia, and Eris Boreas Greyrat. Each model is priced at 10,890 yen, with preorders opening on September 25, 2026, ahead of the official October 23 release.
This latest collection from character-collaboration label GARRACK includes four smartwatches inspired by Rudeus Greyrat, Sylphiette, Roxy Migurdia, and Eris Boreas Greyrat. Every model comes with a character-themed strap and an original watch face designed around its respective hero.
The watches are built around the HUAWEI Band 11, with visuals that respond to step count, heart rate, and stress levels. The characters displayed also change as users accumulate steps throughout the day, blending everyday health tracking with the world of Mushoku Tensei.
The watch faces pack in several clever interactive touches inspired by the series. Character outfits change from their Season 1 appearances through their Season 3 looks based on the wearer’s step count, while weapon displays transform according to the remaining battery level. It is a stylish setup with plenty of fan-friendly details to discover.
▼ Rudeus Greyrat Model
On the Rudeus model, the visual effects surrounding his staff, Aqua Heartia, change according to the remaining battery level. Inspired by Rudeus growing stronger throughout his adventures, the watch also includes a shortcut to its workout features. Incoming notifications trigger an icon based on Rudeus’ diary, while his appearance on the watch face gradually changes as the step count rises before resetting at 10,000 steps.
▼ Sylphiette Model
On the Sylphiette model, the effects surrounding her staff change according to the remaining battery level. Reflecting Sylphiette’s talent for healing magic, the watch includes a shortcut to its breathing exercise feature. Incoming notifications display an icon based on her necklace, while Sylphiette’s appearance gradually changes as the step count rises before resetting at 10,000 steps.
▼ Roxy Migurdia Model
On the Roxy model, the effects surrounding her staff change according to the remaining battery level. Inspired by her command of rain, lightning, and other forms of magic, the watch includes a shortcut to its weather feature. Incoming notifications display an icon based on Roxy’s necklace, while her appearance gradually changes as the step count rises before resetting at 10,000 steps.
▼ Eris Boreas Greyrat Model
On the Eris model, the design of her sword changes according to the remaining battery level. Inspired by Eris growing stronger through relentless training, the watch includes a shortcut to its workout features. Incoming notifications display an icon based on the letter Eris wrote to Rudeus, while her appearance gradually changes as the step count rises before resetting at 10,000 steps.
Each model is priced at 10,890 yen, offering a substantial set of smartwatch features at an approachable price. Fans can track their daily routines while keeping a little piece of the Mushoku Tensei world right on their wrists.
via： GARRACK