Up for bid is an Orient Bambino Open Heart.

The dial and band are both blue.

The dial opens to see the works.

Mineral crystal.

Display caseback reveals the  customized rotor.

 Case width: 40.5 mm. Case thickness: 12 mm. Band width: 21 mm.  

Water resistant at 30 meters / 100 feet. 

Condition: Nearly new. Worn fewer than 10 times. Just a few case marks.