Whenever a Japanese companion robot goes viral after trade-show demos and runway appearances, secondary auction sites quickly fill up with marked-up resales or pre-owned units. Before paying inflated resale prices for Yukai Engineering's Mirumi, there is one physical specification from the manufacturer's FAQ that makes buying brand-new far safer than buying secondhand: the plush fur exterior is non-removable and not washable.
Disclosure & scope: Published by mirumirobot.com (retailer offering brand-new Mirumi Robot Ivory, Pink, and Gray at $88). Product facts cite Yukai Engineering's official US FAQ and US Gray spec page (checked October 2026).
1. Brand-New ($88) vs. Pre-Owned Resale Units
According to Yukai Engineering's official US FAQ (source) and reference specifications (source), Mirumi weighs approximately 155 g, measures 100 × 110 × 140 mm, and uses a built-in USB-C rechargeable battery.
| Inspection Point | Brand-New on mirumirobot.com ($88) | Pre-Owned / Secondary Resale Unit |
|---|---|---|
| Fur Hygiene | Factory-fresh custom Japanese plush fur | Cannot be deep-cleaned: Manufacturer confirms fur is not washable and non-removable (source) |
| Wrap-Around Arm Grip | Unstretched arms ready for 10–15 mm bag straps | May have been stretched over oversized >30 mm straps by previous owner |
| Neck Motor & Sensors | Untouched head-turn actuator and touch/audio sensors | Unknown history of rough handling or manual head twisting |
| Colorway Availability | Direct choice of Ivory, Pink, or Gray at $88 | Inconsistent pricing and missing USB-C accessories |
2. Pick Your Colorway Directly at $88
Skip auction markups and secondhand fur wear by selecting a factory-new Mirumi Robot Ivory, Mirumi Robot Pink, or Mirumi Robot Gray directly from our catalog.