Ideal for fetch sessions on land, in water, or under the stars, the Nite Ize GlowStreak Wild LED Ball keeps dogs engaged with unpredictable bounces and mesmerizing color-changing lights. The rugged fetch ball has unique rubber ridges to make gripping easy for hands, ball launchers, and muzzles alike. Each bounce launches in a new, surprising direction, encouraging boundless play sure to tire out even the most energetic dogs. The GlowStreak features a protected inner core housing motion-activated Disc-O LEDs that light up the night with vibrant, color-blending patterns. Ideal for bigger breeds and rough play, the molded ball delivers shockproof, waterproof, bite-friendly, and slobber-resistant performance. It even floats for those splash-happy swimmers. Nite Ize GlowStreak Wild LED Ball has a 35-hr. battery life powered by 2 replaceable CR2032 batteries (included) and automatic shutoff after 10 minutes of inactivity. Color-changing Disc-O LED for dazzling day-to-night fetch Durable rubber ridges for better grip and unpredictable bounces Motion-activated LED turns on with a bounce Fits most ball launchers Auto shut off after 10 minutes to save battery life Waterproof and floats for pool or lake play 2 easily replaceable CR2032 3V batteries included