- Fast and precise updates: The gauge updates in 5 seconds across a range of -9.9 to 50 degrees Celsius, using advanced sensor technology to provide consistent and accurate water temperature readings. - Rechargeable convenience: USB-C charging with a built-in 5V battery, delivering up to 45 days of operation per charge for continuous water temperature tracking without frequent recharging. - Effortless thermal control: Auto-off after 30 seconds to conserve power, instant single-touch temperature updates, ensuring hassle-free wireless performance and a tidy cordless finish suitable for all aquarium settings. - Optimal low-light clarity: Night-view backlight, clear LED display, and a large 2-inch digital screen for easy reading in any lighting. Use scenarios: - Use in a home freshwater aquarium to monitor and maintain stable water temperatures for fish and plants. - Use in a marine or reef aquarium where precise temperature tracking is essential for coral health and equipment safety. - Use in portable or remote setups or quarantine tanks where cordless operation and long battery life reduce interruptions.