Philips open headphones. At the same time that it is inexpensive, it is a car with high cost performance due to careful construction. It's a clean and stretchy sound (Tamura Eiji)
Maintenance information: 2024.1.7 sweep test is good
Accessories: original box, conversion plug, connection cable, instruction manual
Main specifications: dynamic impedance 30 ohms sound pressure sensitivity 100 dB playback frequency band 10 Hz to 40 kHz weight 440 g