Received package new with items working.
Sound is exceptional for price.
Recommend as per internet to change cable to silver braided upgrade cable from KZ to get the mids and proper highs.
Item send to me is fast and sound system is good
Not bad not bad Not bad not bad
Original KZ ZST In-ear Earpiece Balanced Armature With Dynamic Earphone Earplug BA Driver Noise Cancelling Headset With Mic Replacement Cable