This is a stainless steel necklace made by RaHash. I have owned it as part of my collection. There is no outer box, only the necklace itself. It will be packaged and shipped. The size is 50cm and it is made of surgical stainless steel (316L), which is also used in medical instruments, so those with metal allergies or sensitive skin can use it with peace of mind. You can wear it continuously, even while bathing. It is resistant to rust, heat, and water. Please see the latter half of the images for details.