Wave drum with diameter of 20"/508mm from Sonic Energy series that creates the soothing sounds of the surf and offers a great feature: little steel balls sealed between two drum heads, one synthetic and the other natural goatskin. This means user can choose between two completely different timbres within the instrument. A sealable filling port allows for controlling the amount of steel balls inside. Drum's frame is made of Siam oak wood and features Walnut Brown colour design. Weight: 1290 g.