I purchase the travel alarm specifically to have a time piece and wake-up mechanism for a 900 mile road trip at Thanksgiving . the clock lose more than a minute per half hour , so I purchase a new battery . it still lose time . the alarm be so soft that I could barely hear it . I would have rate this Chaney Instruments Sojourn lcd Travel Alarm clock ZERO star . the software would not accept that , so I give it one star . my fund be not well spend . on the bright side , it be light weight and not too flimsy .