This is a SOXAI RING, size 14, from the initial release. The color is matte silver. I purchased it on MAKUAKE and have been using it. As the images show, it has been used. It can be charged, but the battery life is poor, and it doesn't hold a charge for long. Pairing has been解除 (unpaired), and data has been deleted. It's a junk item, but it includes the sizing kit, adapter, and outer box, all complete. For those who understand.