About Fang Yuan Philosophy of Square & Circle: Rooted in the design philosophy of "square outside, round inside; integrating rigidity and gentleness". It embodies Eastern wisdom: the square symbolizes integrity, while the circle represents tact. The sharp square outer frame pairs with a smooth inner ring that nestles naturally against fingertips. It works beautifully both as wearable ornament and fingertip fidget toy. Premium Rare Materials: The outer inlay is made of opal with dynamic, layered light play. Each piece features one-of-a-kind natural veining. Two titanium alloy band choices are offered: the bare titanium variant presents a cool, pure and understated style; the gold-plated titanium version carries soft luster with timeless refined texture. Crisp Tactile Segments: Housed with a dual-hole, dual-spring and four-ball mechanical structure. It delivers sharp, distinct tactile feedback during sliding for solid stress-relieving play. Available in an extensive size range to fit different finger circumferences. Limited release. Size Chart ❣️ Tips 1. This release is available via pre-order. Ordering will be closed after the 3-day pre-order countdown ends. Please accurately measure your finger size. Orders can be cancelled before the pre-order period finishes. 2. Once pre-orders close, all orders will be submitted to the factory for production. Every piece is unique. No order cancellations will be accepted after this point. Please take note.