Lighten the atmosphere at the office with this unique floating pebbles pen with black ink! The colors combine to create 7 different colors plus a rainbow color morphing effect. Turning it up and down makes the floating eggs go from top to bottom creating a lava lamp like effect. This product is CPSIA compliant. It is not suitable for children under years of age. Add a custom imprint and promote your company with this memorable pen! Floating Pebbles Light Up Pens come ready to use with 3 non-replaceable AG13 Batteries. Blank or Imprinted.