***** *****T128 pager system is designed for restaurant; clinic; church when customer need help; they press call button to ask for help instead of yelling; staff can know their exact location and no need to waste time looking for customers; improve work efficiency greatly*****Max 200m or 656ft; 400mAh battery for wrist watch receiver; 4 hours get full charged and can use 48 hours; low power indication; call button battery can be used more than 12 months; 1 Watch page can add up to 500 pagers*****Service type and time will display clearly on watch screen; easy for servant to know which pager is requesting attention; you also can choose or custom key name like water; bill; beer; service; etc; make services more targeted*****5 Modes arranged from vibration; buzzer; light; prompt time adjustable; suit for both quite and noisy occasion; such as church; nursing home; orphanage; shopping mall; library; etc*****Note; a protective film is affixed to each watch in order to prevent it from being