KZ ES4 Balanced Armature And Dynamic In-ear Earphones Hybrid HiFi Headsets with Bluetooth Cable - Black (With Microphone) converter Light source Included or Not:

Light source Included or Not: Yes

GPS or any other device using USB power

it can support the IR remote control at the receiver end to realize the function of wireless control of devices from another place

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KZ ES4 Balanced Armature And Dynamic In-ear Earphones Hybrid HiFi Headsets with Bluetooth Cable - Black (With Microphone) converter Light source Included or Not:Main Features: Hybrid HiFi earphones: Hybrid earphones balanced armature with dynamic in ear HiFi earphones Independent sound channel for each driver, the sound will not be distorted, bring you a new kind of auditory sense, dental, and sound like feeling extremely rich The midbass and treble driver unit have a rich, vigorous performance at bass, midrange and treble, bass, mids and treble are rich and energetic Comfortable and excellent sound: Solid