--- product_id: 136935075 title: "Birthday Popper® Birthday Return Gift for Kids, 20 Pcs Invisible Ink Magic Pens with UV Light | Secret Message Pen, Fun Magic & Party Favors for Boys & Girls" brand: "birthday popper" price: "¥5569" currency: JPY in_stock: true reviews_count: 8 url: https://www.desertcart.jp/products/136935075-birthday-popper-birthday-return-gift-for-kids-20-pcs-invisible store_origin: JP region: Japan --- # Perfect for parties & group fun Built-in UV light reveals secret messages 20 vibrant invisible ink pens Birthday Popper® Birthday Return Gift for Kids, 20 Pcs Invisible Ink Magic Pens with UV Light | Secret Message Pen, Fun Magic & Party Favors for Boys & Girls **Brand:** birthday popper **Price:** ¥5569 **Availability:** ✅ In Stock ## Summary > 🕵️‍♂️ Write secrets, reveal magic, and be the party’s coolest spy! ## Quick Answers - **What is this?** Birthday Popper® Birthday Return Gift for Kids, 20 Pcs Invisible Ink Magic Pens with UV Light | Secret Message Pen, Fun Magic & Party Favors for Boys & Girls by birthday popper - **How much does it cost?** ¥5569 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/136935075-birthday-popper-birthday-return-gift-for-kids-20-pcs-invisible) ## Best For - birthday popper enthusiasts ## Why This Product - Trusted birthday popper brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Party-Ready Pack:** 20 pens in one set, ideal for sharing the fun with every guest. - • **Boost Creative Play:** Encourages imaginative games like treasure hunts and spy missions. - • **Instant Magic Reveal:** UV light on pen cap instantly unveils secret notes—pure wow factor for kids. - • **Mess-Free & Washable:** Water-based ink ensures safe, easy cleanup after every secret mission. - • **Unlock Secret Worlds:** Invisible ink pens transform ordinary writing into thrilling hidden messages. ## Overview Birthday Popper® offers a 20-piece set of multicolor invisible ink pens with built-in UV lights, designed to create secret messages that only appear under UV illumination. Lightweight and washable, these pens encourage creative, interactive play and make perfect return gifts or party favors for kids’ birthdays and group activities. ## Description This pen is very interesting. After you've written, the letters are not visible/transparent. If you use UV/LED light on the cap to shine on it, you will see the words. Kids will love these spy pens. Kids will love using this pen to keep their secret while playing detective spy games. Invisible pen brings you an amazing variety of fun activities, from Surprise birthday parties, to revealing a top secret message to their parents or grandparents. ## Features - MAKE RETURN GIFTS MORE EXCITING: Surprise young party guests with Invisible Ink Magic Pens that turn ordinary writing into a fun secret-message activity, making them an engaging birthday return gift for kids. - FUN OF WRITING SECRET MESSAGES: Kids can write hidden notes, secret codes, clues and messages that remain invisible until revealed using the built-in UV light, adding curiosity and excitement to playtime. - ENCOURAGES CREATIVE & IMAGINATIVE PLAY: These secret message pens encourage children to create puzzles, treasure-hunt clues, mystery games and fun messages while enjoying an interactive writing activity with friends. - EASY TO WRITE & REVEAL: Simply write a message using the invisible ink and shine the UV light on the writing to reveal it, creating a simple magic-like experience that children can enjoy again and again. - GREAT FOR PARTIES & GROUP ACTIVITIES: Ideal for birthday return gifts for kids, party favors for boys and girls, treasure hunts, party games, classroom activities and goodie bag fillers. - 20 PCS VALUE PACK: Includes 20 Invisible Ink Magic Pens with UV Light, making it convenient for parents to distribute individual pens among children at birthday parties and other group celebrations. - FUN GIFT FOR BOYS & GIRLS: A creative alternative to regular stationery gifts, these magic pens combine writing, mystery and interactive play, making them suitable as kids birthday gifts, secret message pens and fun party favors. ## Technical Specifications | Specification | Value | |---------------|-------| | Age Range Description | Kid | | Asin | B07PC225SF | | Body Shape | Cylindrical | | Brand Name | Birthday Popper | | Closure Type | Click-Off Cap | | Colour | Multi | | Country Of Origin | China | | Customer Reviews | 3.9 3.9 out of 5 stars (1,984) 3.9 out of 5 stars | | Drill Point | Fine | | Hand Orientation | Ambidextrous | | Importer Contact Information | Birthday Popper | | Included Components | Invisible ink pen | | Ink Base | Water | | Ink Colour | Multicolor | | Item Diameter | 1 Centimetres | | Item Dimensions | 13 x 1 x 1 Centimeters | | Item Type | Portable Invisible Magic Pen with Uv-Light (Multicolour, 20 Piece) | | Item Weight | 30 Grams | | Line Size | 0.3mm | | Manufacturer | Birthday Popper | | Material Type | Polyvinyl Chloride | | Model Name | Abracadabra Collection | | Model Number | IX-2Q0F-L5JF | | Pattern | letter print | | Recommended Uses For Product | Writing | | Special Features | Washable | | Style Name | invisible pen | | Unit Count | 20 Count | | Writing Instrument Form | Marker Pen | ## Product Details - **Age Range (Description):** Kid - **Brand:** Birthday Popper - **Colour:** Multi - **Ink Colour:** Multicolor - **Writing instrument form:** Marker Pen ## Images ![Birthday Popper® Birthday Return Gift for Kids, 20 Pcs Invisible Ink Magic Pens with UV Light | Secret Message Pen, Fun Magic & Party Favors for Boys & Girls - Image 1](https://m.media-amazon.com/images/I/41lRzEGKN5L.jpg) ![Birthday Popper® Birthday Return Gift for Kids, 20 Pcs Invisible Ink Magic Pens with UV Light | Secret Message Pen, Fun Magic & Party Favors for Boys & Girls - Image 2](https://m.media-amazon.com/images/I/71JXmaSl-ML.jpg) ![Birthday Popper® Birthday Return Gift for Kids, 20 Pcs Invisible Ink Magic Pens with UV Light | Secret Message Pen, Fun Magic & Party Favors for Boys & Girls - Image 3](https://m.media-amazon.com/images/I/7167Feqb10L.jpg) ![Birthday Popper® Birthday Return Gift for Kids, 20 Pcs Invisible Ink Magic Pens with UV Light | Secret Message Pen, Fun Magic & Party Favors for Boys & Girls - Image 4](https://m.media-amazon.com/images/I/51lcOqqBjYL.jpg) ![Birthday Popper® Birthday Return Gift for Kids, 20 Pcs Invisible Ink Magic Pens with UV Light | Secret Message Pen, Fun Magic & Party Favors for Boys & Girls - Image 5](https://m.media-amazon.com/images/I/51P0+sPhIvL.jpg) ## Questions & Answers **Q: Will it work on plain papers** A: Yes it works on plain papers. It also works on any surface that you can write on. Letters will be displayed only under the light provided in the pen **Q: Do we get 20 pens? But the image shows 1 single packed pen?** A: yes, you'll get 20 pens (title & description mention set of 20). **Q: Is this ink washable?** A: Yes. It is washable **Q: Is this China product? Where it’s been manufactured?** A: Yes this is made in China ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good product *by on Reviewed in India 30 March 2026* Good product for kids. Can buy as return gift ### ⭐⭐⭐⭐ Magic Pen *by on Reviewed in India 17 October 2025* Good for gifting ### ⭐⭐⭐ Novel item *by on Reviewed in India 4 October 2022* Kids liked it.3-4 items are of bad quality (ink is visible to naked eye, low light intensity). One has to order more than their requirement.The cap is strong for small kids to pull and the button for light is difficult to turn on.Overall a novel item for return gift. ## Frequently Bought Together - Birthday Popper 20 Pcs Invisible Ink Magic Pen with UV Light as Birthday Return Gifts or Kids | Fun Magic Toy - PARTEET New Capsule Shape Ball Pens Pack Of 24Pcs For Return Gifts For Kids, Blue - SNAPTRON Birthday Return Gifts Birthday Party for Kids -20Pcs Designer Spirograph Ruler for Returns for Kids Adults Bulk birthday's Return Gift 6-12 (Spirograph Ruler, 20) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.jp/products/136935075-birthday-popper-birthday-return-gift-for-kids-20-pcs-invisible](https://www.desertcart.jp/products/136935075-birthday-popper-birthday-return-gift-for-kids-20-pcs-invisible) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-08-08*