Model B 6125 DIVER This compact travel alarm inspired by the Iconic Bulova watch Marine Star line has an electronic beep alarm and a seconds hand. The inside bezel ring independently turns using the crown to set for elapsed time measurment if desired. The hands and markers have luminesent material to aid with night time viewing. This case folds into a super small compact size of less that 1 in tall. The LR44 battery required is included as well as a travel pouch to store this alarm in any suitcase.Closed dimensions .7" H x 2.5" W 2.35" D H 1.8cm x W 6.3cm x D 6cm