Note:The stylus is a worn-out product, and its normal service life is about 300-400 hours. Except for damage caused by careless operation,the use of excessive needle pressure, shoddy inferior records and severely shaking turntables will shorten the life of the needle tip.As the radius of curvature of the sharpened needle tip becomes larger,its ability to track high-frequency signals in the sound groove decreases.When the sound details are reduced, you need to consider replacing the Tip: Half-drill push pin Height: 17.5mm Output: 4mv Impedance: 450 ohm Frequency response range: 10HZ-30KHZ Resolution: more than 25DB Balance degree: 0.5DB Impedance matching: 47K ohm Recommended needle pressure: 2g Effective acupuncture pressure: 1.9g-2.4g Time to enter the state: 25h colour: as shown Material: plastic + metal Package Contents: 1 x Magnetic Needle Stylus Only the above package content, other products are not included. Note: Light 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.