This means you can choose between two completely different timbres within the same drum.
A sealable filling port allows you to control the amount of steel balls inside.
Sealable filling port: players can add or empty out steel balls to control the volume, timbre and response of the drum
Hardwood shell: the hardwood frame of this drum produces a warm sustain along with great dynamic and tonal range (measures 16" x 2 3/4")Hand selected goat head: this hand drum is equipped with a goat skin head that provides a pleasant resonance at both high and low frequenices
Wave sound effect: The sea drum evokes the sound of the ocean with a swirling sound effect that can be used for musical effects
Perfect for music therapy and performance: musicians and sound therapists alike will find a number of ways to use a calming ocean effect