This toy include 21 parts and can be assembled to be small 6 kinds of toy: Plane, car, boat, windmill and dog etc. All of them don" t need battery and can be moving under the sunshine. The sun light can offer the continuous energy for the toys. It is a funny solar toy with 6 in 1, children can assemble them by theirselves without using any other tools and can learn the technology knowledge of solar energy, foster their ability to study on their own, build their actual practise ability. So it is your good choice as a gifts to your children. Specification: Product size: ( mm) Boat: 121 * 61 * 86 Windmill model: 154 * 153 * 239 Dog model: 68 * 46 * 64 Car model: 70 * 54 * 34 Plane model: 154 * 61 * 94 Plane 2 * 218 * 61 * 166 Unit Weight ( g) Total Weight 202g Boat 36.56g Windmill 43.32g Dag 19.4g Car 18.76g Plane 32.66g Plane 2 44.72g Solar cell life 3years-5years Motor: 12000 prm / s / U: 1.2V Consumption: Boat model: 30MA Windmill model: 100MA Dog model: 50MA Car model: 60MA Plane model: 20MA Plane 2: 20 MA 6 in 1 Solar Robot Chameleon Kit Child" s favorite 2010 latest, the most fashion