A. Prompting methods include light flash and vibration, light flash and buzzer, light flash, vibration and buzzer, and low power consumption display, which can be flexibly combined. B. The restaurant paging system supports 4 channels, with each channel supporting 5 buttons. One button can be paired with multiple watch receivers. C. The wireless watch pager features a stylish watch design and is easy to use. It has a removable rechargeable battery with a long standby time and charging circuit protection. D. The wrist pager supports IPX7 water resistance, strong anti-interference, fast speed, and accurate transmission, with an operating range of 100‑200m in open distance. E. The wrist pager is widely used in various places such as homes, factories, workshops, general assembly areas, bowling alleys, massage rooms, churches, elderly call alarm systems, and offices. F. Item Type: Wireless Wrist Pager G. Model SU 691 Watch Receiver Parameters: Operating Frequency: 433.92MHz; Material: ABS; Charging Voltage: DC5V; Operating Voltage: DC3.7V Rechargeable Li Battery; Operating Current: 75±10mA (Vibration, Buzzer Mode), 75±10mA (Vibration Mode); Standby Current: 10±5mA; Receiving Sensitivity: -107±2dBm; Decoding: Studycode; Water Resistant Rating: IPX7; Operating Temperature: -20℃-60℃; Battery Type: Li Battery; Battery Capacity: 300mAh (Included) H. Model SU D1 Button Transmitter Parameters: Operating Frequency: 433.92MHz; Battery Type: Alkaline Battery (12V23A); Battery Capacity: 300mAh (Included); Transmitting Current: 10mA±3mA; Standby Current: 10mA; Open Range: Approx. 100-200m / 328.1-656.2ft; Push Button Lifespan: 1 Million Times; Water Resistant Rating: IPX7; Working Temperature: -20℃-60℃; Single Key: CALL; Applicable Areas: Widely used in homes, factories, workshops, clubs, bowling alleys, massage rooms, churches, casinos, golf and country clubs, hospitals, health clubs, elderly call alarm systems, and offices, etc. I. Package Includes: 1 x Watch Receiver, 3 x Watch Buttons, 1 x Power Cord, 1 x Instruction Manual