Safe material and durability This pool thermometer features a robust polypropylene body (PP) with durable components, making it suitable for spa and pool environments. It stays reliable over time, resisting environmental factors and maintaining accurate temperature measurement without degradation. Easy to use and battery-free No batteries are required. It shows the water temperature reliably within 1-2 minutes. Its compact, lightweight design simplifies regular pool care and handling. Universal pool compatibility Delivers consistently accurate readings with a dual-scale display that covers all pool types and water conditions, including chlorinated, saltwater, and filtered systems. Simple pool monitoring Large display provides quick access to the precise water temperature and clear readability at a glance, making monitoring effortless. Use scenarios - Regular home pool or spa maintenance: check temperature before use or chemical dosing to ensure comfort and safety. - Routine care during cleaning or chemical adjustments: fast 1-2 minute readings support timely adjustments. - Multi-pool households or seasonal setups: universal compatibility and portable design allow monitoring across different pools or spas.