PowerTRC Liquid Motion Bubbler (Blue Green) BLUE AND GREEN LIQUID MOTION TIMER | Watch as these two color liquid drip down slowly and create a memorizing timer GREAT FOR RELIEVING STRESS | Liquid motion is great for soothing away any kind of stress and can help relieve anxiety for those who have autism, depression, or ADHD COMPACT AND PORTABLE | The motion timer measures at 5x2.5x1 inch which is great for traveling and taking it around wherever you go! DOES NOT REQUIRE BATTERIES | The best part of about the liquid motion is that it doesn't need any batteries, just turn up side down and watch it again go! NONFLAMMABLE & NONTOXIC MATERIAL | Ooze is safe and made out of nonflammable and nontoxic material