How long does the Sensory Play Jar light up?

How long does the Sensory Play Jar light up?

The Sensory Play Jar will glow until the batteries are depleted. To extend battery life, store the jar upside down on its lid, leaving about 1.5 inches of space at the top without water. This will deactivate the water-activated technology and conserve battery power. When the jar no longer lights up, simply replace the batteries with three brand new AAA ones, and it's ready to glo again!