The Aihua JX series is the best machine, the sensitivity is very good, the sound field is wide and sweet, I like it, I like it, one button opens the DSL heavy bass, the tape is clear, the simulation taste, machineThe function is good, the state is first-class, the original ecology is not repaired, send a new Sony earphone, with a seven battery case, the color is not bad, the magnetic head is free.Warranty one year,