Features: and high qualityOcean Drum is a very fun instrument,the sound is clear and pleasant, which can train children's hearing and enhance the cultivation of children's music.The wave drum evokes the sound of the ocean with a sound effect that can be used for musical effects or therapy.An internal fill of lightweight steel balls is what makes the ocean surf sound effect - These can be removed and added back with the sealable fill port.Excellent for sound immersion retreats, frame drum singing, or meditative applications.Simple to hold, these drums can be played in a traditional style, as well as with your hands or any variety of soft mallet.Specifications: Material:WoodDiameter:6/8/10/12inPackage Includes: 1 x Ocean Sound Drum.note: The item does not contain oil.Please allow 0-1cm error due to manual measurement. Make sure you do not mind before you bid.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!