USB lowvoltage submersible heater designed for fish and turtles — provides a stable, comfortable environment for aquatic pets while prioritizing safety and ease of use. Key benefits Reliable temperature control: external electronic temperature control lets you set and maintain water temperature between 18 and 34 °C for stable conditions that reduce stress and disease risk in fish and turtles. Safe and lowvoltage power: USB lowvoltage design lowers electrical risk compared with mainspowered heaters and is easy to power from common USB outlets or battery packs. Compact, flexible fit: pocketstyle, submersible design works in a variety of water containers where space is limited or precise localized warming is needed. What makes it stand out External electronic temperature control for precise adjustments without opening the tank. Automatic safety shutdown if water temperature exceeds 36 °C or if water level drops, protecting pets and equipment. Versatile compatibility for tanks, aquariums, turtle habitats, and even pet drinking water. Features and attributes Function: submersible heating rod that warms aquarium or container water and maintains set temperature. Compatibility: suitable for fish tanks, aquariums, turtle tanks, small water basins, and pet drinking containers. Size and design: compact pocketstyle form factor designed to fit into small spaces and various tank setups. Performance: adjustable temperature range 18–34 °C with automatic cutoff above 36 °C; stable, electronic regulation for consistent water conditions. Power: USB lowvoltage operation for convenient and safer power sourcing. Practical use scenarios Aquarium winter care: maintain a consistent 24–28 °C for tropical fish in small tanks or desktop aquariums when ambient room temperature drops. Turtle habitat: keep turtle tank water at an appropriate, adjustable temperature to support digestion and activity without overheating. Temporary or travel setups: warm and regulate water in small bowls or portable containers for shortterm care, quarantine, or transport when a full heater is impractical. Installation and operation (simple) Submerge the heater in the water and connect to a USB power source. Use the external control to set the desired temperature between 18 and 34 °C. The unit will automatically shut off if temperature exceeds 36 °C or water level becomes too low. Safety and maintenance Lowvoltage USB power reduces electrical risk. Automatic shutoff protects pets if water overheats or drops below safe level. Regularly check water level and controller settings; follow standard tank maintenance practices. This submersible USB heating rod provides precise temperature control, compact installation options, and builtin safety features for reliable daily use with fish, turtles, and small pet water needs.