Features: Highly rust resilient, hard case perfect for traveling, shipping or storage. Equipped with one storage bag, which is dual zipper design, simple and convenient, 20mm thick crash resistant cotton, protect the handpan safty. A represent instrument by the principle of Helmholtz-resonator. All notes have perfect resonance vibrations each note checked with a tuner minimum possible fluctuations. As very newly-developed musical instruments, steel tongue drums do not require complicated musical theory or any rudiments of music. They can be played by drumstick or by bare hands, beating, patting, or finger patting, with no fixed musical background. You can play tongue drums by much improvising, and could make different performance each time, even on the very same song. They not only enhance our passion, alsoenhance physically and mentally, and exalt spirituality. Suitable for man and woman, younger and older, without the limit of gender and age. There is a layer of oil on the surface, in order to prevents rust, does not affect the use. You can apply maintenance oil regularly to maintain.