Product Features: 1. Determine standard voice 2. The standard pronunciation of each group derived reference tone key tone 3. In reference tone set as the standard sound of the keys is derived for each remaining key tone 4. pitch reference tone group tone keys, each key test the rest of the pitch of the sound Absolute standard A-440Hz tuning fork, sound sensing performance. Soft Shell Case can better protect it from wearing out.
Material: Metal Manner of Articulation: Other Number of Holes: Other Key Number: Other