and high quality. Assisting teachers and parents in better physics teaching. Enrich children's leisure life, cultivate hands-on ability, and consolidate knowledge. Let kindergarten children and elementary school students learn physical knowledge, hands-on to form a simple circuit, series circuit, parallel circuit. Colour: green Material: plastic + electronic components Package Contents: 2 set x Circuit Electricity Learning Kit (2 x AA Battery Not Include) (This is just a DIY kit, not a finished product) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.