Features: 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 System Material: ABS, PVC Parameters of Watch Receiver: Operating Frequency: 433.92MHz Size: Approx. 46 x 48 x 15mm / 1.8 x 1.9 x 0.6in ( Excluding Watchband ) ( Manual Measurement, Slight Error May Exist ) Battery Model: 502535 Battery Type: Lithium Battery Battery Capacity: 400mAh(Battery Included) Operating Voltage: DC3.7V Operating Current: 57mA10mA(Beeper Mode), 95mA10mA(Vibration Mode) Standby Current: