1、RECHARGEABLE RECEIVER: The watch receiver is equipped with a large capacity battery, providing long battery life without frequent charging, and a standby time of up to 7 days. 2、RECORD KEEPING: The call record is permanently saved, and even if power is cut off or factory settings are recovered, the call record will not be lost. 3、HUMANIZED DESIGN: Built in 33 call commands that can be freely set, with vibration, ringing tone, and flashing prompts, suitable for different usage scenarios. 4、SIMPLE TO USE: The watch receiver adopts a high definition LCD screen display, user friendly menu operation, simple and easy to use. 5、WIDE APPLICATION: This wireless calling system is suitable for using in banks, tea house, restaurants, hotels, factories, hospitals, offices, leisure clubs, etc. Item Type: Wireless Calling Pager System Material: ABS Watch Receiver: Connection Pagers: 500 Pcs Alert Method: Vibration, Buzzer, Flashing Reception Sensitivity: -110dBm Call Information Storage Capacity: 20 Groups Battery Type: Lithium Battery Battery Capacity: 250mAh (Included) Standby Time: 7 Day Button Pager: Button Pager Frequency: 433.92MHz Battery: DC12V Battery Type: Alkaline Battery (23A 12V Battery) Single Pager Battery Capacity: 60mAh (Included) Transmitting Current: 10mA±3mA Standby Current: <1uA Open Space Distance: >200 Meters Button: 100,000 Times Waterproof Grade: IPX4 Working Temperature: -20℃ to 55℃ 4 Buttons: CALL, BILL, CANCEL, WATER 1 x Watch Receiver 5 x Pagers 1 x Charger 1 x Charging Cable 1 x User Manual