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 SystemMaterial: ABSWatch Receiver Specification:Operating Frequency: 433.92MHzOperating Voltage: DC3.7VBattery Type: Lithium BatteryBattery Capacity :400mAh (Battery Included)Operating Current :57mA10mA(Buzzer Mode), 95mA10mA(Vibration Mode)Standby Current: <8mAInterruption Current: 1805uAReception Sensitivity: -108dBmDecoding: Code LearningWaterproof Class: IPX4Operating Temperature: Minus 20 to 55Black Pager Specification: Operating Frequency: 433.92MHzBattery: DC12VBattery Type: Alkaline Battery (23A12V Battery)Battery Capacity: 60mAh (Battery Included)Emission Current: 10mA3mAStandby Current: <1uAOpen Distance: >200 Meters / 218.7ydKey: A Million Time Life SpanWaterproof Class: IPX4Operating Temperature: Minus 20 to 55Three Keys: Call, Bill, Cancel.Package List:1 x Water Receiver10 x Pager1 x User Manual1 x Charging Cable10 x Sticker