Classic Music Box Pocket Watch: It's a watch, but also a music box! Simply turn the handle on the back to play the "Happy Birthday" melody. Classic and innovative design: Features two movements a quartz movement for timekeeping and a mechanical music movement. Wind the handle on the back to hear the clear, beautiful music. Pocket Watch Dimensions: 2.32" x 0.96" (5.8cm x 2.4cm). Each watch comes with a 40cm chain for easy wearing. Enjoy the charm: Hold this little watch, wind it up, watch the gears turn, and listen to the soothing music. Perfect Gift: This attractively designed vintage-style watch makes a fantastic gift for birthdays, Easter, Mother's Day, Father's Day, holidays, Thanksgiving, Christmas, and New Year's.