1. A MUST-HAVE FOR BUSY PETS: If you travel frequently and are worried about your little pet not having enough water, this 500ml water bottle is a must-have for you. It ensures your pets stay hydrated while you are away without making a mess in their cage. 2. USED INSIDE AND OUTSIDE THE CAGE: You can place it outside or inside the cage according to your own needs. If your pet is naughty, it is suggested to place it outside the cage. And you can easily turn the water dispenser on or off for cleaning and refilling. 3. NO NOISE WHEN DRINKING WATER: The automatic water dispenser adopts gravity flow design and can control the amount of water to avoid any overflow. It doesn't make annoying noises while your pet is drinking compared to ball bearing water bottles. 4. MAKE YOUR BELOVED MORE COMFORTABLE: Compared with traditional water bottles and bowls, our hanging water fountain provides your pet with a more comfortable and hygienic drinking experience. Place it at the right height in their cage, they won't have to raise their necks. 5. DUST & LEAKPROOF: The sealing design prevents water leakage and dust from entering. Compared with large water bowls, the water is not easily contaminated, and it will not cause inflammation in the mouth because the chin is exposed to water for a long time.