Description: Function: Chime Music Box plays the melody on the hour, with 4 kinds of melody. Design: Two black wires on the speaker, two blue wires connect to movement. SET: Setting Button After press one time"SET"button,the will onward one hour,but after press one time"SET",the quarter hour chimes will not work correctly during the first hour after time is set.The correct chiming will start at the next full hour. Practical Tools for You: This Music Box can be used when DIY Clock, it's a clock accessory, practical for you to design and make your own pendulum clock. Note: Two 1.5V Carbon zinc batteries only,not included. Please Do not use high current batteries,rechargeable batteries,they will damage the movement. Specification: Name: Clock Chime Box with Horn Material: Plastic Color: Black Size: 58x58x16cm/22.83x22.83x6.30inch Battery: 2x 1.5V Carbon Zinc Batteries only (Not Included) Package Includes: 1 Piece Clock Chime Box with Horn(2 Pack) Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful online shopping!