... transmitted from heartbeat brooch, chest band frequency is AM5.3KHz; Time display: Hour, Minute, Second;Alarm clock function;Give alarm when heart ... the upper and lower limit values (60~220).Timing (maximum time-keeping is 23 hours, 59mimutes, 59 seconds, 99)12/24 ... :57.5*33*34CMG.W:14.5KGs heart rate watch with time display, alarm and warning function