On business days (not including Saturday) we will ship the same day if you order before 3pm.

On business days (not including Saturday) we will ship the same day if you order before 3pm.
You may return your order up to one month after ordering and will get your money back immediately.
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For a small fee of EUR 2 you can pay 14 days after delivery.
For an additional EUR 9,90 we will ship next day before 12pm if you order before 3pm and in Germany.
You can pay per invoice, debit, prepayment, credit card, PayPal, cash on delivery or cash on site.
In the shopping cart, you can choose gift wrapping for all of your items.
When ordering, you can choose if you want us to attach a message instead of the invoice.
article no. 16282
Electrical devices tend to need batteries or power plugs to function properly – or at least we thought they did. Because the Water-powered Clock Construction Kit challenges this assumption and presents us with a digital clock that runs on nothing but water!
The kit contains all the parts needed and a detailed manual with instructions and several interesting experiments. Without giving away too much, water is not the only liquid that you can use to power your clock!