JOHNYSTAR has been producing and processing various electronic commodities in large quantities for a long time, with various and novel styles, low price and reasonable price, stable and reliable quality, exquisite and generous packaging, and has been sold all over the world! Js-6542 hook into the earworm mp3 headset, the sound quality is pleasing, the sound quality is good, the heavy bass is strong. Transparent plastic box packaging, beautiful and high-grade, ready to stock. 480 pieces/piece, 48 pieces/bag. Impedance: 32 ohm weight: about 12 g earphone type: the earphone type: the earphone USES neodymium metal 16mm frequency response range: 18-22000 hz sensitivity: 104 dB sound pressure level at 1mW