100% New，Sankyo Brand. It is a Wind Up Golden 18 Note Musical Movement that use for either our Wind Up Wooden Piano Music Box or use for DIY your music box! You can buy it alone and DIY your music box， it is very easy to setup! Melody:3 tunes for choose，please tell me the tune you want，otherwise，I will send you "You Are My Sunshine"as default.1.You Are My Sunshine2.Frozen-Let it go3.La Vie En Rose4.Grandfather's ClockThythm:18 notes Material: Gold-plating MetalSize:About 5.0*4.5*2.0cm How to use:The sound power from Spring，use the key to turn the Spring tightly，then release and will be playing Playing speed: 12-20" Full playing time: 2-3' Service life: >=500 times In order to magnify the sound，you can touch the movement on something when playing!