***** **********Best Quality Guranteed. *****Waiter can offer precise and fast service according to the key customer pressed from 1 of these 4 keys; staff can improve working efficiency; avoid long wait; clock and service records; convenience to use; pasted buttons on table by attached double tape*****Long range; T128 pager maximum distance can be 200m or 656 ft from pager to wrist receiver at open area; signal can penetrate about 5m between two floors*****Long battery life; built in rechargeable 400mAh battery for the watch receiver; 4 hours get full charged and can use 48 hours; low power indication; call button can be used more than 12 months*****5 Modes; vibration buzzer flash arrange freely; vibration mode is fit for coffee shop; customer cannot be disturbed; widely used in fast food restaurant; cafe; hotel; bar; hospital; factory; office; church; service station*****Note; a protective film is affixed to each watch in order to prevent it from being scratched during inspection and