Liquid indicator hanging over the edge of a cup or glass

This handy liquid level indicator is designed to show when your drink in a glass, tumbler or cup is almost full and when it is completely full. With two different sounds and a vibration function , this indicator helps to prevent overfilling and reduce spillage . The device gives an intermittent acoustic and vibration signal when the glass is almost full and a continuous vibration signal with a rapid series of beeps when the glass is completely full.