This is a four-strand necklace. I received this as a gift, so I don't know the details of the product. I haven't used it myself, but I received it from someone who did. The necklace will be shipped alone. Color: Blue Length: Approximately 48cm (see images 5 and 6) Please refrain from purchasing if you are looking for a perfect item or are very sensitive to details, as it has been stored at home. Due to sales commission and shipping costs, it will be shipped in simple packaging. Thank you for your understanding. Shipping method is only by regular mail. Available for immediate purchase.