Specifications: Made of ABS plastic, this kit is durable, anti-rust and has long service life. It can enrich children's leisure life, cultivate their hands-on ability, and consolidate knowledge. This product can let kids learn physical knowledge, hands-on to form a simple circuit, series circuit or parallel circuit. Type: Circuit Toy Kit Material: ABS Plastic Applicable Battery: 2 x AA Battery (Battery Not Included) Features: Educational Toy, Experimental Equipment, Durable Size: 14.5cm x 8.5cm x 3.5cm/5.71" x 3.35" x 1.38" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Storage Box 2 x Small Lamp Holder 1 x Single Pole Switch 2 x Battery Holder (Battery Not Included) 5 x Bulb 6 x Wire