Impedance, DC resistance: 20 ohms Output Voltage: 032mV, 331/3 rpm at 1kHz Frequency Response: 10-45kHz +/- 2dB Separation: more than 18db at 1kHz Balance: less than 0.5dB Recommended load: more than 100 ohms Acupuncture: 2.2g Effective acupuncture range: 1.5-2.8 grams Weight: 5.2g Colour: as shown Material: metal + plastic Package Contents: 1 x Magnet Cartridge Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.