Go down and check coupons out. Remember to check price history if it is available. Best price?
Connecting interface: 3.5mm, Frequency response: 10-40KHz, Impedance: 22ohms, Sensitivity: 107dB
Aliexpress
There’re some similar (or not) items on Aliexpress
| Image | Product (link) | Price | Coupons |
|---|---|---|---|
 |
KZ Earphones Organizer PU Portable Universal Wired Earbuds Protective Case Black for ZST ZS3 ZS4 ZSR ZS5 ZS4 AS10 ZS6 V80 ZSN T2 | $4.04 | – |
Click here to search by yourself. Here are coupons that you can use.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in China. We have found one coupon for this product!
Link: Banggood product page
1. ($28.79): BG4BW25
coupon code has to be applied in shop’s cart after clicking “Proceed to checkout”. Click to copy code and open shop)
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): 1a3b8f, e2bcea, TTxBG10, aff7off, BG3CSUM, bgssaff9, AFfbG10, 0e7f33, EARSP11, FBCOUPON1, BGAFF10OFF, BGTT10, bGhOnEy10, BGSS10%SW, bgshOOp10, BGELIG0920
(there’s a little possibility that old coupon will work)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. China – KZ ZSR Hybrid Earphones With Mic ($-3)
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 and Aliexpress (only if product name will be the same as on Banggood and I will post it on social media though, so it’s more like Banggood price alert)).