Compact 10W USB Submersible Heater for Small Aquatic Environments Key benefits — why you need it Keeps small tanks and water stations at a stable, safe temperature without bulky equipment. Lowvoltage USB power and automatic safety cutoffs reduce risk of overheating or dryrun damage. Slim, submersible design and a long 136 cm cable make installation flexible in tight or unconventional setups. What it does and how it solves problems Provides reliable, constant heating for very small volumes (designed to work in 2 L tanks and similar containers), preventing temperature swings that stress fish, turtles, and other aquatic pets. Adjustable thermostat lets you set the target temperature and maintains it automatically, eliminating the need for constant monitoring. Builtin safety features shut the unit off if the water overheats or the water level drops, protecting pets and equipment. Key features and specifications Power: 10W submersible heater. Power input: DC 5V 2A USB connection for lowvoltage safety and easy power sourcing. Cable length: 136 cm for flexible placement of the USB power source. Temperature range: Adjustable thermostat from 18 C to 34 C with automatic constant control. Overheat protection: Automatic shutdown if temperature exceeds 36 C. Safety cutoff: Waterout poweroff function — device turns off automatically when water level drops to prevent dry operation. Construction: Black ABS housing for durable resistance to corrosion and wet conditions. Design: Fully submersible compact heater specifically sized for small aquariums, betta tanks, turtle containers, and pet water stations. Performance and reliability External electronic control stabilizes performance and maintains set temperature with minimal fluctuation. Low power draw (10W) is energy efficient for continuous use in very small tanks. Robust ABS casing resists erosion and is suitable for longterm immersion in freshwater environments. Compatible applications / use scenarios Betta tank: Maintain a steady 24 C–26 C environment in a 2 L or similarly small betta tank to reduce stress and promote healthy behavior. Turtle container or hatchling pool: Provide gentle warming for small turtle enclosures and temporary water stations that require precise, lowpower heating. Pet water station or quarantine cup: Keep drinking or holding water at a controlled temperature for small animals or while treating arrivals, using the 136 cm USB cable to place the power source away from the enclosure. What to expect in daily use Easy setup: Submerge heater, route the USB cable to a DC 5V 2A USB source, and set the desired temperature. Minimal maintenance: Durable ABS body and simple controls require little upkeep; automatic safeties reduce the need for constant supervision. Safe operation: Lowvoltage USB power plus overheat and waterout shutdowns provide multiple layers of protection for pets and equipment. Specifications summary 10W submersible heater 136 cm cable DC 5V 2A USB input Adjustable thermostat 18 C to 34 C Automatic shutdown above 36 C Fully submersible with waterout poweroff Black ABS construction This compact USB heating rod is a practical, safe choice for maintaining stable temperatures in small aquatic environments while minimizing energy use and installation complexity.