Don\'t let the sun dictate the fun.112g 63mmWeight: 3.9oz The GlowStreak LED Ball allows you to continue your game of fetch way after nightfall. A robust rubber ball with a protected LED light inside, it is perfect for after-hours walks. It turns off after ten minutes\' inactivity, and turns on with a single bounce.  Rivers, ponds and puddles are no problem: this ball is not only waterproof, it floats! Durable LED Ball for nighttime playDisc-O LEDS Motion activatedAuto shut-off after 10 minutes of inactivityDurable rubber constructionWaterproof - it floats!Run time: 35 hours2 replaceable CR2032 batteries includedDiameter: 2.5\"