Specs:
Interface: 0.78 2-pin
Rated power: 3 mW
Impedance: 22 Ω
Wear type: In-ear
Driver Combination:4 EST+1 DD+2 BA
Sensitivity:109±2db
Frequency response range: 5 Hz- 50k Hz
Plug:3.5mm
Cable length: 1.2 m
More: https://hifigo.com/products/kinera-baldr-1-dd-2-ba-4-est-tribrid-electrostatic-flagship-in-ear-monitor