Which jews harp is best for a beginner?

DK947 Drumlja

DK947 Drumlja
Slovenian Drumlas
Oberton Pro Lab measurements:
Gaps: 500-600 µm (?)
Base frequency: 80-90 Hz (?)
Reed hardness: 200 gf (?)
Frame hardness: 1000-1500 gf (?)
Reed size: 100x0 mm
Overall dimensions: 230x15x8 mm (?)
Weight: 10 g
12 USD
Case included: woodblock (?)
Compatible Cases and Other Accessories

Shipping: from 3 USD (more...)
Stock: No (when will be in stock?)
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best price
Bamboo jews harp with very big gaps, quiet and thud sound with typical for this kind of instruments coloration.