{"product_id":"secret-agent-invisible-ink-spy-pens-set-of-2","title":"Secret Agent Invisible Ink Spy Pens (set of 2)","description":"\u003cp\u003eA fun gift, budding secret agents can use these 2 pens to write messages which can only be seen under the pen's UV light.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eStep 1: Write a secret message\u003c\/li\u003e\n\u003cli\u003eStep 2: Use the secret lamp in the pen lid to read the message\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eEach pen uses 3 LR41 Lithium batteries which can be replaced by unscrewing the pen lid. Remove the white caps from the pen nibs before using for the first time\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWarning:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eButton batteries are easily swallowed and can cause serious harm.\u003c\/li\u003e\n\u003cli\u003eCheck battery cover is secured correctly before use.\u003c\/li\u003e\n\u003cli\u003eKeep batteries away from children.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Rex London","offers":[{"title":"Default Title","offer_id":51675171422348,"sku":null,"price":3.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0026\/2406\/1558\/files\/26178_2-secret-agent-pen-set-new_png.webp?v=1785250618","url":"https:\/\/shop.visitgunnersbury.org\/products\/secret-agent-invisible-ink-spy-pens-set-of-2","provider":"Gunnersbury Park Museum","version":"1.0","type":"link"}