1. Small digital thermometer for aquarium water: durable and resistant to deformation; provides reliable tank temperature monitoring at a glance. 2. Temperature detector for fish tanks: simple, practical design; easy to operate; suitable for home use. 3. Temperature measuring tool: made with sturdy materials and fine workmanship; practical and durable; features LED display for easy temperature reading. 4. Betta tank friendly design: creative mounting option; easy to fix on smooth surfaces; functions as an aquarium temperature probe. Use scenarios: - Use in a home freshwater or community tank to maintain stable temperatures for fish health and comfort. - Use in a betta tank to monitor and prevent temperature fluctuations that can stress or harm bettas. - Use during water changes or setup in small nano tanks to quickly verify new water temperature before mixing.