Johnco 4M - KidzLabs - Spy Science

Have fun communicating secret messages with your friends like spies do! Send top secrets in Morse code, Invisible writers, X ray secret notes sheet and more!Age: 8+WARNING! Contains lithium coin cell battery.A coin cell battery can cause severe or fatal injuries within 2 hours if it is swallowed or placed inside any part of the body. Keep batteries away from children whether new or used. Dispose of used batteries immediately. If you think that batteries might have been swallowed or placed inside any part of the body, seek immediate medical attention.