RingConn Official Smart Ring Sizing Kit (Sizes 6-14) $1 + Delivery ($0 with Prime/ $59 Spend) @ RingConn Official via Amazon AU

The RingConn Sizing Kit is crafted from premium-grade plastic, while the RingConn Smart Ring is constructed from aerospace-grade titanium and coated with a scratch-resistant layer, ensuring outstanding corrosion resistance and durability.