It is 925 sterling silver * it is a flat neck chain * it is the price of 1 product * 2.5 mm width 40 cm 3.40 grams 45 cm 3.70 grams * you can specify the product details in the product detail section of the order stage * shipped with the original box and bag Improved version for clearer understanding and better search visibility. Suitable for users seeking detailed and reliable product information.