Key benefits Complete DIY circuit kit: all components are included in kit form, enabling handson assembly that deepens understanding of circuit design and practical skills. Water Light Module with NE555 timer and CD4017 decade counter: provides running light effects using a classic timercounter IC combination, appealing to electronics enthusiasts and DIY learners. Versatile for education and practice: suitable for STEM education, hobby projects, or as a thoughtful gift for students interested in electronics and soldering practice. Durable and reliable: circuit board is made from PC material to support repeated assembly and experimentation with longlasting performance. What you get All components included in kit form for immediate build and learning. Core features and performance Function: LED running light module designed around an NE555 timer and CD4017 decade counter to create sequential running light effects. Material and construction: LED running light circuit board made from PC material, ensuring durability and stable performance during repeated assembly and experimentation. Reliability: designed for repeated use with consistent operation across multiple assembly sessions. Compatibility and use Designed for educational use, hobby projects, and soldering practice; suitable for classrooms, maker spaces, and DIY electronics learners. Use scenarios STEM classroom or workshop: students assemble the kit to observe timing and counting concepts in a handson circuit, reinforcing theory through practical activity. hobby project or display: create decorative LED running light sequences for signs, displays, or electronics projects; easy to with standard soldering practices. Gift for electronics learners: a practical, educational gift for students or hobbyists interested in electronics and soldering techniques.