Pro|Tone m250 Street-Style Clip Earphones.
Pro|Solutions Pro|Tone™ m250 Technical Specifications
Frequency Response: 50 ~ 20,000Hz
Dynamic Transducer
Impedance: 32 ohms
Max Sound Pressure Level (SPL): 105dB
Cable Length: 1.15/ 3.77ft
3.5mm connector plug
Max Power Rating 50mW
Weight 38g (with cable)