Two rods, tuned to almost the same pitch, produce a fascinating pulse known as beating. Listen as the two tones create their complex dance. The Woodstock Zenergy Meditation Chime can be used as an aid to meditation and to heighten sensory awareness. For best results, play the Zenergy Chime quietly, being careful not to dampen the sound by letting the mallet rest on the rods after striking them. Boxed for gift-giving. Length: 7.5 inches, Width: 3 inches. Consumer warranty is 1 year for anything - lifetime on tuning. Cannot sell into Canada per manufacturer.