This Retractable Dog Leash with Light, 3 pcs AG7 button cell (include), durable rust proof swivel hook and steady impact-resistant ABS material, durability internal coil spring. Handle comfortable and anti-slip, with quick pause, lock and roll-in button, easy Roll-On and Roll-Off. Suit for Small, medium, larget dog which is slim or all cats. 16ft polyester woven strap, very strong, non-broken or flokkit. 360 Tangle-Free design, strap out or in smoothly no stucking.