What is a good budget first watch that can be used in both a casual and formal outings?

Just bought a new camera and couldn't resist some moody, dark efforts. Not thrilled but I don't hate it.

I'm attending my wife's office Christmas party this evening. (After taking the picture, I re-tied the tie so it wouldn't show below the waistcoat.) Outfit rundown: - Blood Rose Peaky flat cap by Boston Scally - Made-to-measure, light blue, royal oxford, merino wool dress shirt by Proper Cloth - Charcoal gray, Prince of Wales, wool trousers by Brooks Brothers - Gray suspenders - Gray, burgundy, and red plaid waistcoat by Murano - Dark Green wool sportscoat by Bonobos - Burgundy shadow-striped, cotton, over-the-calf socks by Nobile Italy - Made-to-measure, Burgundy, Atelier Munro silk grenadine tie from Coats Clothing Company - Oxblood leather, Wingtip Oxfords by Carets - Sterling Silver and Green Malachite Cufflinks by Effy - Dark green, Star Wars Forests of Endor, silicone wedding ring by Enso - Sterling Silver and Green Malachite ring by Effy - Silver-toned, Star Wars Rebel Alliance lapel pin - Dark green, burgundy, and light blue silk pocket square SOTD: Layton by Parfums de Marly WOTD: Presage Cocktail Time with green sunburst dial by Seiko with stainless steel bracelet by Long Island Watch