FAQ

Most spinner rings on the market either sacrifice comfort or rely on bulky bearing structures. Numeno features a proprietary internal bearing system — not simply inserting a standard bearing, but integrating it into the ring’s structure. This allows us to achieve an ultra-thin profile of 2–2.2mm while maintaining smooth motion and wearing comfort.

The ring uses a precision-engineered internal bearing system that enables smooth, continuous motion with minimal resistance. The rotation is fluid, consistent, and designed to feel satisfying with every spin.

The structure is engineered for long-term stability. Under normal use, the spinning mechanism maintains its smoothness and integrity. Regular cleaning will help preserve optimal performance.

We recommend cleaning your ring once a week or whenever particles may have entered the mechanism. Use clean water with mild detergent, gently rotate the ring for 2–5 minutes, then air dry or use a hair dryer before wearing.

Yes — the ring is fully waterproof and suitable for everyday exposure. However, if water or debris enters the internal structure, we recommend cleaning it before continued use.

The ring is designed for everyday wear. However, strong impacts or heavy pressure (such as gripping heavy objects) may cause deformation due to its precision structure.

No lubrication is required. The internal system is designed to operate smoothly without additional oils or lubricants.

Orders are typically processed within 1–3 business days. Delivery usually takes 5–8 business days depending on your location. Delays may occur due to customs or carrier conditions.(Shipping Policy)

Yes — we offer a 30-day return policy. Items must be unused and in original condition. For exchanges, we recommend placing a new order after your return is approved.(Refund Policy)

We recommend using a standard ring size guide. If you are between sizes, choosing the slightly larger size is usually more comfortable. If you are unsure, feel free to contact us for assistance. (Ring Size Guide)