The Material Conversion Power Supply LCD Potato Clock with No Mess Holder is an educational and fun toy that demonstrates the principle of an electrochemical cell for kids. Children will be amazed at the variety of substances that can be used as power supply. The LCD clock runs on two potatoes、 lemons、 tomatoes、 oranges or any other fruits. No-mess design with attached electrodes is great for young experimenters、 and assures that the parts will not go missing after time. It will also encourage your little one to explore the science world whilst being creative and imaginative.                                    <p>Features</p>            <ul><li> An educational and fun toy for kids</li><li> Designed to demonstrate the principle of an electrochemical cell</li><li> The LCD clock runs on two potatoes、 lemons、 tomatoes、 oranges or any other fruits</li><li> No-mess design with attached electrodes</li><li> Encourage children to explore the science world</li><li> Compact design allows for convenient storage when not in use</li><li> Accessories only、 potatoes are not included </li></ul>                                                            <p>Specifications</p>            <table width="100%" border="0" cellpadding="0" cellspacing="0"><tbody><tr><td width="131"> Material</td><td width="365"> ABS & Electronic Components </td></tr><tr><td width="131"> Color</td><td width="365"> Yellow</td></tr><tr><td width="131"> Dimensions</td><td width="365"> (2.60 x 1.30 x 0.32)" / (6.6 x 3.3 x 0.8)cm (L x W x H)</td></tr><tr><td width="131"> Weight</td><td width="365"> 3.7oz / 105g   </td></tr></tbody> </table>                                                            <p>Package Includes</p>            <ul><li>1 x LCD Screen Digital Clock with Wires</li><li>2 x Pots</li><li>2 x Zinc Strips</li><li>2 x Copper Strips</li><li>1 x Transparent Tapes</li><li>1 x Connecting Wire</li><li>1 x Instruction Manual</li></ul>