【Product Name】 LED Miniature Bulb Tester (For Science Experiments - Completed Product) 【Product Description】 This is a "miniature bulb tester" that can be used in science classes and for home study. It uses an LED miniature bulb, making it energy-efficient and bright, and the batteries last longer. Features ・Uses 2 AA batteries (not included) ・Can be worn around the neck, freeing up both hands ・Simply clip the alligator clips onto metal to test conductivity ・Components are securely fixed to a wooden base, so it's ready to use immediately upon arrival Uses ・"Investigating the properties of metals" in class ・Science experiments at home ・Ideal as educational material for experiencing the difference between metal conductors and insulators This is a completed product, so you can use it immediately after inserting batteries. Please understand that this is a handmade item before purchasing. 【Price】 2,500 yen (including shipping)