Which jews harp is best for a beginner?

TK8 Dan Moi "Mu Công"

TK8 Dan Moi "Mu Công"
Vietnamese Dan Moi /
Oberton Pro Lab measurements:
Gaps: 10-20 µm (?)
Base frequency: 150-300 Hz (?)
Reed hardness: 150-200 gf (?)
Frame hardness: 100-300 gf (?)
Reed size: 30x0 mm
Overall dimensions: 55x12x2 mm (?)
Weight: 3 g
5 USD
Is case included: woodblock (?)
Compatible Cases and Other Accessories

Shipping: from 3 USD (more...)
Stock: Yes (5+)

best price
warranty
Very small, extremely high-pitched lips jews harp. Necklace shows its souvenir intention first and this is true - it hard to play on such instrument to its short sustain, though timbre is very clean.