Sometimes referred to as a ?wind gong?, the Feng has a constantly evolving tone, from a gentle murmur to thunderous explosions.� Faster attack, explosive full-frequency sound, and a shorter duration differentiate the Feng gong from the Chau gong. 2 years warranty against defect in material or workmanship. Defective product must be returned to Dream for replacement. Small 6 to 14 Inches. Medium 16-24 . Large 28 and up.. .