- 10-W USB submersible heater for aquariums, turtle tanks, and pet drinking water, providing a warm environment for your water-loving pets. - Automatic temperature control: Set the desired temperature between 18 and 34 degrees Celsius. The heater maintains a constant temperature automatically and includes a safety shut-off to prevent overheating. - Pocket-sized design: Compact and portable, it fits easily into small tanks (1–3 L), making it suitable for various water setups including horned frogs and turtles. - Easy external control: Adjust the temperature conveniently from outside the tank without disturbing your pets or the water system. - Use scenarios: - In a small turtle tank (2 L) to maintain a comfortable water temperature for soaking and hydration. - In a horned frog terrarium with a water dish to ensure safe, warm drinking water. - In a desk or travel setup powered via USB to keep a compact water source warm for a pet in limited space.