Thank you for viewing. This is a Vostok Komandirskie watch from the Soviet era. It's an old, hand-wound wristwatch I bought several decades ago, featuring a submarine illustration. Case width: Approximately 38-39mm Crown: Screw-down, a little stiff *Please assume it is not waterproof, as the waterproofness is unknown. *Note: Although it runs when wound, there's a feeling that the mainspring is weak or loosens and stops after winding a little. (It may be broken. Please understand as I am not knowledgeable.) Therefore, I recommend this for those who can disassemble and service (overhaul) it, or for collection purposes. (It's considered junk.) Also, the size feels small, so I recommend it for those with slender wrists if you want to wear it. Thank you. Shipping via Rakuraku Mercari (in an envelope)