Aliexpress
Here are coupons that you can use.
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. China – KZ ZSR Hybrid Earphones With Mic (-3 USD)
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China. You can get coupon down below.
Link: Banggood product page
Coupon (28.79 USD): BG4BW25
(CouponsFromChina.com tip: apply code in your basket (cart) after clicking “Proceed to checkout”. Click to copy code and open shop)
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Old coupons (from the oldest to the newest): 1a3b8f, e2bcea, TTxBG10, aff7off, BG3CSUM, bgssaff9, AFfbG10, 0e7f33, EARSP11, FBCOUPON1, BGAFF10OFF, BGTT10, bGhOnEy10, BGSS10%SW, bgshOOp10, BGELIG0920
(these coupons are old, so probably won’t work)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. China – KZ ZSR Hybrid Earphones With Mic (-3 USD)
Price history and price alert
Here is price history (for all/most countries) for KZ ZSR Earphones Black Standard.
Price records source(s): Gearbest, Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).