Clever tweens proudly build their own money safe and use it to stash their treasures! Perfect for kids who like science kits and knowing how things work, they'll use the easy instructions to connect a circuit alarm and simple dial lock. Siblings learn to respect others' privacy with this BYO safe - you need a key and the PIN to get inside! Measures 9.4" x 8.5" x 2.5" when built. Requires 1 AA battery, not included.