Key benefits Fast, accurate temperature readings every 5 seconds to catch rapid changes before they affect your aquatic life. Long, low-effort operation: up to 45 days continuous use on an energy-efficient 5V rechargeable battery with USB-C charging, reducing maintenance and charging frequency. Clear, usable display and controls: 5 cm LED screen with night-friendly backlight, simple one-button temperature control, and a 30-second auto-stop to conserve power. Modern wireless concept and stylish design that fits demanding aquarium landscapes while delivering reliable performance. What it does (specifications and performance) Measurement range: -9.9 °C to 50.0 °C, suitable for a wide range of aquarium setups. Update rate: temperature refreshed every 5 seconds via a modern sensor for timely readings. Power: energy-efficient 5V rechargeable battery; USB-C charging for convenient, universal recharging. Runtime: up to 45 days of continuous operation on a single charge under normal use. Display and controls: 5 cm LED display with night-friendly backlight; simplified temperature control via a single button; 30-second auto-stop to reduce unnecessary power use. Design: wireless-ready concept combining functional reliability with a modern aesthetic for high-end aquascapes. Why you need it Prevent temperature-related stress: fast updates and precise range help you detect and correct temperature swings that can harm fish, plants, and invertebrates. Less maintenance, more reliability: long battery life and USB-C charging reduce interruptions and help maintain continuous temperature records for your ecosystem. Easy to read, day or night: the backlit 5 cm LED display gives clear readings during routine checks or in low-light conditions without disturbing nocturnal tank inhabitants. Fits premium setups: compact, wireless-friendly design complements visually demanding aquarium landscapes while delivering consistent function. Practical use scenarios Planted tropical aquarium: Monitor water temperature in a densely planted tank where plants and sensitive species require consistent conditions between 22–28 °C. Fast updates let you respond quickly to heater or filter issues. Reef or marine tank: Maintain stable conditions for corals and invertebrates; the wide measurement range and accurate sensor help protect delicate reef inhabitants from thermal stress. Short trips or continuous coverage: Leave the unit running while you are away for up to 45 days and rely on precise temperature data to detect problems early or confirm stable conditions on return. What you get Precise temperature monitoring across -9.9 to 50 °C with 5-second refresh rate. Long-lasting, rechargeable 5V battery with USB-C charging. 5 cm backlit LED display, single-button control, and 30-second auto-stop for power efficiency. A modern, wireless-friendly design intended for demanding aquarium landscapes. Compatibility and notes Intended for aquarium and related aquatic ecosystems; ensure the sensor placement follows tank guidelines for accurate readings. USB-C charging provides wide compatibility with common chargers and power banks.