Hifiman Crystalline Copper Silver Cable (3.5mm-to-6.35mm TRS) headphone 3.5mm a proprietary coating that virtually

a proprietary coating that virtually eliminates unwanted vibrations and resonance from within IEMs

On the other hand

MMCX Pairing name KINERA-CDB002 Bluetooth chip QCC3034 Bluetooth effective distance 10 m Music playing/Call time

2') with A2DC connectors

fatigue accumulates over time

Hifiman Crystalline Copper Silver Cable (3.5mm-to-6.35mm TRS) headphone 3.5mm a proprietary coating that virtually3m 3. 5mm to 6. 35mm TRS HIFIMAN only uses the finest cables for their headphones and each model features a cable specially designed for it. The crystalline is made with stronger, further improved materials (of crystalline copper and crystalline silver wire) custom designed for wide frequency range, low signal loss and enhanced emphasis on the low end for quality audio reproduction.