Approximately 3.5cm wide. This is a Seiko Tomony mechanical men's watch for sale. It's from my father's watch collection, an antique hand-wound watch with a classic design that suits any occasion ☺︎ There may be minor scratches and clear marks from use, including on the glass surface, but it still has a good luster and I think it's in pretty good condition. Please check the images carefully. The belt has been replaced with a new, non-original leather belt that looks natural. This is a very old hand-wound watch, so I cannot guarantee its future operation, but it is currently running without major errors (I have not performed any maintenance such as an overhaul). As it is now, the screw (crown) can be wound normally by hand and it doesn't stop immediately... Quick change is also okay. There are no accessories. I am very sorry, but please do not purchase this if you are not used to used items, are overly sensitive, do not understand the above explanation, or are worried. Mercari is a place for private sales. It is a used item in its current condition and has been inspected by an amateur (100% perfection is absolutely impossible). Thank you for your understanding. A popular model of antique watches ☺︎ It is a Seiko Tomony mechanical (hand-wound) men's watch. Please make it a proud treasure... ※※ I will ignore and delete discount requests and unreasonable price negotiations that do not include a price offer, as well as standard Mercari messages. Also, please refrain from unnecessary "likes" (they are a factor in withdrawal). #Seiko #SEIKO #SeikoSchoolTime #SEIKOSCHOOLTIME #SCHOOLTIME #SeikoHandWoundWatch #HandWoundWatch #MechanicalWatch #SeikoTomony #Tomony #SeikoTomonyHandWound #SEIKOTOMONY #SeikoMechanical Movement: Hand-wound (mechanical) Belt color: Black Accessories: None