They can tell you everything you need to know about Pythagoras\' theorem in a flash and love nothing more than getting stuck into complicated arithmetic sum, for a loved one who is a pro when it comes to numbers, we\'ve got just the gift!Designed by Pierre Garner and Elise Berthier, our personalised wooden calculator combines the retro with the modern with its eco-friendly corn-based plastic and rich bamboo design. You can personalise the calculator with a name of your choice to be engraved in a stylish block font, so everyone will know who it belongs to! A great gift for the home or office, whatever the occasion! What Can I Put On My Calculator?Personalise it with a name to appear, using up to 12 characters. Use our innovative preview feature to see how your personalisation will look. Simply enter the name you wish to appear and press the Preview button. Material: Natural bamboo front and keys, shell in biodegradable plastic PLADimensions: H15 x W8.6 x D1.05 cmPower Source: Solar energy and battery (included)Features: 8 dot matrix digits, solar electric cell