Mobile Watch Receiver and Call Button Set Mobile Watch Receiver Waterproof design allows use in water up to 3.3 feet (1.0 meters) deep for over 30 minutes, making it reliable in wet environments. Builtin calendar, clock, and alarm functions help keep track of important schedules and tasks. Rechargeable battery with an extended standby time of about 5 days reduces the need for frequent charging. Fast delete function lets you remove one registered number or all registered numbers with a single key, simplifying management. Registration information can be downloaded via provided software, streamlining the setup process. Encryption capability protects against accidental data loss caused by incorrect operations. Features an OLED display that is thinner, lighter, flexible, and resistant to shocks and knocks for longlasting durability. Call Button Builtin silicone pad provides 360degree waterproof protection for dependable performance in challenging conditions. Compact and slim design without screws allows for quick and easy battery replacement. Practical Applications 1. Ideal for use in hospitality environments such as restaurants or hotels, allowing quick communication between staff and service points even in wet areas like kitchens or poolside settings. 2. Suitable for healthcare facilities where rapid communication is needed between patients and caregivers, with waterproofing ensuring safety during cleaning or sanitation processes. 3. Useful in manufacturing or outdoor work sites where staff need to coordinate tasks in real time while facing exposure to water, dust, or impacts. This set combines durability, ease of use, and practical functions to support efficient communication in demanding environments and situations.