TOYSMITH Toysmith Design Your Own Building Blocks Watch Kit

Create and customize your own unique watch with the 107 different building block pieces. These blocks are black light responsive and fit most wrists. Requires one SR626SW battery.
Toysmith Design Your Own Building Blocks Watch Kit:

• The Designer Watch you design
• Create and customize your own
• 107 blocks that are black light responsive
• Requires one SR626SW battery
• One size fits most