Samsung Galaxy Ring Size 8 - Brand: Samsung - Model: Smart Ring - Accessories: Dedicated charging case - Color: Black - Packaging: Original box This item was sold in the US and used for about a year, only during sleep. It syncs without issue with Japanese smartphones. I am selling it because I switched to a Galaxy Watch8 for sleep tracking. I used a silicone cover specifically for the ring, so there are no major scratches on the exterior. However, please understand that this is a used item before purchasing. Please check the photos for details.