Feature: 1. Stylish Watch: This patient pager system features stylish watch receiver design, radio frequency technology provides stable signal transmission. 2. 10 Buttons: This wireless calling system provides 10 pagers and 1 watch receiver. One watch supports up to 500 pagers. 3. Dual Mode: This customers pager system supports accurate time display. Vibration or buzzer prompt mode. 4. Detachable Battery: This patient calling system adopts detachable battery, offering long stand by time. Circuit protection for charging ensures high safety. 5. Wide Application: This restaurant paging system is perfect for restaurant, nursing home, cafe, supermarket, hotel, hospital ward, emergency center, bank, school, factory, construction site. Specification: Item Type: Patient Pager System Material: ABS Watch Receiver Specification: Operating Frequency: 433.92MHz Operating Voltage: DC3.7V Battery Type: Lithium Battery Battery Capacity :400mAh (Battery Included) Operating Current :57mA±10mA(Buzzer Mode), 95mA±10mA(Vibration Mode) Standby Current: <8mA Interruption Current: 180±5uA Reception Sensitivity: -108dBm Decoding: Code Learning Waterproof Class: IPX4 Operating Temperature: Minus 20℃ to 55℃ Black Pager Specification: Operating Frequency: 433.92MHz Battery: DC12V Battery Type: Alkaline Battery (23A12V Battery) Battery Capacity: 60mAh (Battery Included) Emission Current: 10mA±3mA Standby Current: <1uA Open Distance: >200 Meters / 218.7yd Key: A Million Time Life Span Waterproof Class: IPX4 Operating Temperature: Minus 20℃ to 55℃ Three Keys: Call, Bill, Cancel. Package List: 1 x Water Receiver10 x Pager1 x User Manual1 x Charging Cable10 x Sticker