The Huck 'N Tuck GlowStreak combination pack ensures that fetch doesn't have to stop just because the sun goes down. By combining the Huck 'N Tuck with our acclaimed GlowStreak waterproof color-changing LED ball, you and your dog can play fetch all day or nite. The motion-activated ball turns on with a simple bounce and shuts-off automatically. The unique grooved design on the surface creates a bite friendly exterior that is easy to pick up for small and large dogs alike. Powered by replaceable, long-lasting batteries, you can have up to 35 hours of playtime with the GlowStreak. Collapsible handle is perfect for convenient carrying and storage while extending to maximize leverage for effortless ball throwing. Auto shut-off after 10 minutes of inactivity (5 minutes of glow followed by 5 minutes of flashing). Durable rubber construction. Waterproof - it floats! Run time: 35 hours. 2 replaceable CR2032 batteries included. Diameter: 2.5" Weight: 3.9oz