Lifestyle brand GARRACK is no stranger to anime crossovers. Its previous releases include Attack on Titan kitchen knives inspired by the Scout Regiment’s Ultra-Hard Steel blades and Chainsaw Man smartwatches, earning plenty of attention for its playful collaboration gear.
Now, the brand is teaming up with the TV anime Mushoku Tensei for four character-themed smartwatches starring Rudeus, Sylphiette, Roxy, and Eris. Each model is priced at 10,890 yen. Preorders opened on September 25, 2026, ahead of the official release on October 23, 2026.
This latest collection from character-collaboration brand GARRACK features four Mushoku Tensei smartwatch designs based on Rudeus, Sylphiette, Roxy, and Eris. Each edition comes with a character-inspired strap and an original watch face created specifically for the collaboration.
The watches are built around the HUAWEI Band 11, with on-screen visuals that react to step count, heart rate, and stress levels. Different versions of the characters appear as users rack up steps throughout the day, bringing a little of the anime’s world into their daily health routine.
The watch faces pack the series’ fantasy setting into a range of interactive details. Character appearances evolve from their Season 1 looks through their Season 3 designs as the wearer’s step count rises, while the characters’ weapons also change according to the remaining battery level.
▼ Rudeus Greyrat Edition
The Rudeus Edition changes the visual effects surrounding his staff, Aqua Heartia, according to the remaining battery level. Inspired by Rudeus growing stronger through his adventures, the watch includes a shortcut to its workout features. When a notification arrives, an icon based on Rudeus’ diary appears on the watch face. Rudeus also grows as the wearer’s step count increases, with the progression resetting after 10,000 steps.
▼ Sylphiette Edition
The Sylphiette Edition changes the visual effects around her staff according to the remaining battery level. Reflecting Sylphiette’s healing magic, this version includes a shortcut to breathing exercises. Notifications trigger an icon based on Sylphiette’s necklace, while her on-screen appearance grows alongside the wearer’s step count before resetting at 10,000 steps.
▼ Roxy Edition
The Roxy Edition changes the visual effects around her staff according to the remaining battery level. Inspired by Roxy’s command of rain, lightning, and other forms of magic, this model includes a shortcut to the weather feature. Notifications are marked by an icon based on Roxy’s necklace, while her on-screen appearance develops as the step count rises and resets at 10,000 steps.
▼ Eris Edition
The Eris Edition changes the appearance of her sword according to the remaining battery level. The design channels Eris becoming stronger through relentless training and includes a shortcut to the watch’s workout features. Notifications bring up an icon based on the letter Eris wrote to Rudeus, while her on-screen appearance grows with the wearer’s step count before resetting at 10,000 steps.
Each model costs 10,890 yen, offering a wide range of features at an approachable price point. The collection turns an everyday smartwatch into a pocket-size slice of the Mushoku Tensei universe.
via： GARRACK