Stay Hydrated, Stay Healthy. Our 4L Wireless Stainless Steel Cat Water Fountain features a 4000mAh rechargeable battery for true cordless freedom. With a 4-stage filtration system, ultra-quiet operation, and 3 smart modes (sensor, timer, continuous), it provides your pet with the freshest water anytime, anywhere. Easy to clean, durable, and stylish—the perfect upgrade for your pet's health.