1Convenient Button: The features wrist watch design for easy carrying and use, with various prompts, including light flashing with vibration, sound, lighting flash with buzzer, lighting flash with vibration with buzzer. Low power consumption and long standby time. 2Flexible Combination: One button can be paired with multiple receivers, or multiple buttons can be paired with one receiver, catering various combination needs. 3Enhanced Performance: The wireless call system adopts RF wireless technology with 998 channels to choose from, adjustable learning codes for flexible use. 4Versatile Usage: The watch pager call system is suitable for a wide range of places, including home, school, restaurant, etc., can be flexibly combined to meet different needs. 5Long Lasting Battery: The wireless watch receiver comes with a rechargeable 300mAh battery for extended use. Button transmitter with 23A 12V battery with 60mAh capacity for stable performance. Item Type: Wireless Call System Receiver: Working Frequency: 433.92MHz Working Current: 10020mA (Vibration + Buzzer Mode), 7510mA (Vibration Mode) Battery Capacity: 300mAh (Included) Standby Current: 105mA Reception Sensitivity: -1072dBm Decoding: Learning Code Water Resistant Rating: IPX4 Operating Temperature: -20~ 60 Button Transmitter: Working Frequency: 433.92MHz Battery Type: 1Pc 23A 12V Battery Battery Capacity: 60mAh (Included) Transmitting Current: 10mA3mA Open Distance: Approx. 100 ~ 500m / 328.1 ~ 1640.4ft Keystrokes :1 Million Times Water Resistant Rating: IPX7 Operating Temperature :-20~ 60 Single Key: CALL 1 x Watch Receiver 1 x Watch Button Transmitter 1 x User Manual 1 x Charging Cable