Thank you for viewing. This is a Mikimoto International pendant loupe that I haven't used much. It's larger and easier to see than the other one I'm selling. Maximum size: 37 x 2cm (chain length) The chain is adjustable by 10cm. I have used it a little, so please understand that it is a used item. Thank you. It doesn't have the original case, so I will send it in the Mikimoto International box shown in the photos.