Which jews harp is best for a beginner?

TK21 "Thi Vai" Jew's Harp

TK21 "Thi Vai" Jew's Harp
Vietnamese Jew's Harps /
Oberton Pro Lab measurements:
Gaps: 50-80 µm (?)
Base frequency: 90-110 Hz (?)
Reed hardness: 100-130 gf (?)
Frame hardness: 600-900 gf (?)
Reed size: 55x22 mm
Overall dimensions: 100x25x6 mm (?)
Weight: 35 g (150 g with case)
33 USD
Case included: yes
Compatible Cases and Other Accessories

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

best price
warranty
Low quality jaw harp with hight pitched loud sound, hard reed and dirty, mechanical timbre.