Product information:

Color classification: 6.5MM special earphones for musical instruments [black] 6.5MM special earphones for musical instruments [red] 6.5MM special earphones for musical instruments [blue] 6.5MM special earphones for musical instruments [rose red]
Horn diameter: 40.00mm
Impedance: 3202
Frequency response: 20~ 20000Hz
Maximum input power: 20mW
Output sound pressure: 105dB ± 3db
Line length: ≤2.1m

Packing list:

Headphone x1