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 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: 57mA±10mA(Beeper Mode), 95mA±10mA(Vibration Mode) Standby Current: <8mA Power off Current: 180±5uA Reception Sensitivity: Minus 108dBm Decoding: Code Learning Waterproof Class: IPX4 Operating Temperature: Minus 20℃ to 55℃ Parameters of Transmitter: The Operating Frequency: 433.92MHz Color: Black Battery: DC12V Battery Model: 12V23A Battery Type: Alkaline Battery Battery Capacity: 45mAh(Battery Included) Emission Current: 10mA±3mA Standby Current: <1uA Open Distance: Approx. 100 to 200 Meters / 109 to 219yd Button Life: A Million Times Waterproof Class: IPX7 Operating Temperature: Minus 20℃ to 60℃ Single Button: CALL. Package List: 2 x Watch Receiver1 x Pager2 x Power Cord1 x User Manual