Champagne glass.
This item contains a patented electronic system, powered thanks to 2 alcaline batteries ("button kind"), imprisoned within a resin made for food contact.
As a consequence, htere is a total segregation between the system and the liquid.
Two electrodes allow liquid detection as your glass is filled. Consequently, your glass is swiched on or off as this item is filled or empty.
To be sure your glass is fully switched off, return your glass after use.

High : 180 mm
Weight ~ 20 g
Contains : 0.1 L
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