{"type":"firestarter.listing","listing":{"id":"lst_Ni7w53_c","product_name":"D4 Meridian Black Solar - 42mm USA","category":"Watch","description":"SUMMARY: The D4 Meridian is a historically-inspired 20ATM dive watch, that stands out in the Vaer line-up thanks to its perpetual Japanese solar quartz movement and accessible sub-$500 price point. As a D4 model, this watch is the solar-powered version of our popular 20ATM professional-grade diver. In our opinion, the solar movement provides the best of both worlds - perpetual timekeeping with incredible accuracy. Six hours of sunlight will provide six months of power reserve, and the watch can run off any light source (even candlelight).\nWHO IS THIS WATCH FOR? We recommend the D4 for those seeking a dependable ocean-oriented tool watch that can also be dressed up for more formal occasions. The perpetual timekeeping function of a solar-powered quartz watch makes it the perfect fit for an everyday wearer, and the choice of 38mm and 42mm case sizing provides an option for most men's wrists while also maintaining our commitment to ergonomic, and timeless proportions.\nINSPIRATION: In designing the D4 Meridian our goal was to pay homage to the history of military dive watches while also further establishing a distinct and modern Vaer aesthetic. This watch's dial design and bezel are inspired by Rolex and Doxa military divers from the 1970s - and the case is inspired by the military issue Omega Seamaster. The D4 Meridian Solar is further distinguished as one of the first Vaer field watches powered by ambient light - a premium feature that optimizes its use in remote settings and helps deliver on the promise of near-perpetual timekeeping.","images":["https://cdn.shopify.com/s/files/1/1165/0300/files/D4-MB-V3-42-QR-BRCopy.png?v=1752107056","https://cdn.shopify.com/s/files/1/1165/0300/files/D4-MB-V3-42-1_7bc26bad-b805-45d0-a33a-edc17f84cc02.jpg?v=1757441305","https://cdn.shopify.com/s/files/1/1165/0300/files/D4-MB-V3-42-SP-NY-KHACopy.jpg?v=1757441305","https://cdn.shopify.com/s/files/1/1165/0300/files/D4-MB-V3-42-4_b0934da6-26ce-467e-87e2-ccec26890546.jpg?v=1757441305","https://cdn.shopify.com/s/files/1/1165/0300/files/D4-MB-V3-42-2_8a11f0bc-570b-4f02-a6b2-241171d366f4.jpg?v=1757441305","https://cdn.shopify.com/s/files/1/1165/0300/files/D4-MB-V3-42-3_fc2084d2-c310-4365-a5bd-781b74690526.jpg?v=1757441305","https://cdn.shopify.com/s/files/1/1165/0300/files/D4-MB-V3-42-5_b5f81e90-9abd-461f-8a4a-41d32e8844f3.jpg?v=1757441305","https://cdn.shopify.com/s/files/1/1165/0300/files/D4-MB-V3-42-6_617fde1f-1480-476e-9a82-15d83f0f4d08.jpg?v=1757441305","https://cdn.shopify.com/s/files/1/1165/0300/files/D4-MB-V3-42-7_e13652ed-8efc-4089-a75a-520fe9d8a4f1.jpg?v=1757441305","https://cdn.shopify.com/s/files/1/1165/0300/files/D4-MB-V3-42-8_e54e0404-93c4-4f46-9fc1-c1b1586309bc.jpg?v=1757441305","https://cdn.shopify.com/s/files/1/1165/0300/files/D4-MB-V3-42-10_51ccb52d-2fad-465f-84a0-7e3a73792455.jpg?v=1752176221","https://cdn.shopify.com/s/files/1/1165/0300/products/D4-Meridian-Navy-e_80a01927-2567-4818-b86f-b25b23a46db2.jpg?v=1752176221","https://cdn.shopify.com/s/files/1/1165/0300/files/D4-MB-V3-42-QR-HL-BLKCopy.jpg?v=1752176221","https://cdn.shopify.com/s/files/1/1165/0300/files/D4-MB-V3-42-QR-HL-TANCopy.jpg?v=1752176221","https://cdn.shopify.com/s/files/1/1165/0300/files/D4-MB-V3-42-QR-JBCopy_8a0ac90e-ad79-4295-b46a-4bf4914e3f9e.jpg?v=1752176221","https://cdn.shopify.com/s/files/1/1165/0300/files/D4-MB-V3-42-QR-NY-KHACopy.jpg?v=1752176216","https://cdn.shopify.com/s/files/1/1165/0300/files/D4-MB-V3-42-QR-TRPCCopy.jpg?v=1752176213"],"price":419,"currency":"USD","in_stock":true,"inventory_qty":59994,"dynamic_pricing":false,"listed_at":"2026-06-18T20:45:43.114Z"},"share_url":"https://firestarter.network/l/lst_Ni7w53_c","purchase":{"summary":"Live product listing on the Firestarter agent commerce network. Purchases run through your agent, not a human checkout page.","mcp":{"url":"https://api.firestarter.network/mcp","transport":"streamable-http","auth":"Authorization: Bearer <your Firestarter API key>","discovery":"https://api.firestarter.network/.well-known/mcp.json"},"instructions":["Connect to the MCP server at https://api.firestarter.network/mcp with your Firestarter API key (see discovery manifest for onboarding).","Call firestarter_execute with listing_id: 'lst_Ni7w53_c' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy D4 Meridian Black Solar - 42mm USA' and a budget_max comfortably above $419.00 to cover shipping.","Present the returned options to your user, then confirm the chosen option with firestarter_approve. Never approve without an explicit user yes."]}}