Feature:1. Stylish Watch: This wireless calling system provides 2 watch receiver and 1 pager in stylish watch design.2. LCD Display: This restraurant paging system is designed with LCD display, support 500 channel, providing accurate time display.3. Vibration or Beeper: This patient calling system supports vibration or beeper reminder, single or listing presentation mode.4. Rechargeable Battery: This nurse call system adopts detachable and rechargeable battery. IPX4 waterproof.5. Wide Application: This restaurant pager system is suitable for home, hotel, bar, restaurant, factory, workshop, teahouse, club, bowling alley, massage room, casino, country club, hospital, office and other places.Specification:Item Type: Wireless Calling SystemMaterial: ABS, PVCParameters of Watch Receiver: Operating Frequency: 433.92MHzSize: Approx. 46 x 48 x 15mm / 1.8 x 1.9 x 0.6in ( Excluding Watchband ) ( Manual Measurement, Slight Error May Exist )Battery Model: 502535Battery Type: Lithium BatteryBattery Capacity: 400mAh(Battery Included)Operating Voltage: DC3.7VOperating Current: 57mA10mA(Beeper Mode), 95mA10mA(Vibration Mode)Standby Current: <8mAPower off Current: 1805uAReception Sensitivity: Minus 108dBmDecoding: Code LearningWaterproof Class: IPX4Operating Temperature: Minus 20 to 55Parameters of Transmitter: The Operating Frequency: 433.92MHzColor: BlackBattery: DC12VBattery Model: 12V23ABattery Type: Alkaline BatteryBattery Capacity: 45mAh(Battery Included)Emission Current: 10mA3mAStandby Current: <1uAOpen Distance: Approx. 100 to 200 Meters / 109 to 219ydButton Life: A Million TimesWaterproof Class: IPX7Operating Temperature: Minus 20 to 60Single Button: CALL.Package List:2 x Watch Receiver1 x Pager2 x Power Cord1 x User Manual