Features: brand new and high quality for CREATIVE FUN GIFT. A wonderful gift for kids and friends on birthday, Halloween, Christmas, New Year, Easter, Children's Day, Valentine's Day, or for Easter Egg fillers, Xmas gift bag fillers, etc. FEATURES. The upgraded spy-ink pens are thicker for longer lasting fun! Cell batteries included and installed. The barrel of the pens will come in a variety of colors to keep the activity exciting. 7 Bright colors: Black; Red; Purple; Blue; Green; Pink; Yellow. (COLORS AS RANDOM! ) Each pen has a pull tab to save battery life. NOTICE: Please BE CAREFUL with small items. Recommend age: Children above 3 years. HALLOWEEN PARTY TOYS. Kids love using this kind of invisible pen to keep their secrets. for Play a variety of fun activities such as detective games, stocking stuffer, treasure hunt,escape room,or classroom activity. for Ideal for Halloween party game toys, bringing you an amazing variety of fun activities. MAGICAL INK PEN. The invisible ink pen adopts harmless and tasteless ink. for Ideal for play treasure games, left clues on the white papers, then let the children find the secret messages themselves with these spy-ink pens. Thrilling while having lots of fun. Inspiring them curiosity and interests of chemistry and physics. MONEY TESTER PEN. The UV lights reacts to the hidden marks on the money, to ensure your bills' authenticity. WARM TIPS: Due to the special ink inside the pen, please close the cap when not using. Otherwise it might dry out the ink and make it impossible to write! Specifications: Material: Plastic Weight: Approx. 10g Battery: 3 Pcs Cell Betterues (Included) Pen Length: Approx. 13.5cm/5.3in Lighting Distance: Approx. 50 Meters Color: Black; Red; Purple; Blue; Green; Pink; Yellow (Randomly Colors) Note: 1.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1 Piece Invisible Ink Pen