Xiaomi Piston Colorful Version Earphones (Banggood, Aliexpress: Implementation of standards GB / T 14471-2013, Connecting line Length: 1.25M, Sensitivity: 98dB SPL, Speaker impedance: 32Ω, Communication: Wired, Connectors: 3.5mm, Material: Metal + Silicone + TPE, Frequency response range: 20-20000 HZ (the best price with coupon)).
Just check coupons out (with price alert and history). You probably want to know what is the best price?
Aliexpress
There’re some similar (or not) items on Aliexpress
You can use link bot to get even lower price:
Click here to search by yourself. Here are coupons that you can use.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China. You can get coupon down below.
Link: Banggood product page
1. ($9.99): 13f142
apply it in your 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/feV
Old coupons (from the oldest to the newest): BGFUN7, TTxBG10, BGYAmep1, BGYAmiep, BGPLOXPC, esPiston, BG3CSUM, AFfbG10, aff7off, affbg10, 502C6B, BGBFCR02, BGCITYADS2019, BGVDay10%off, EARSP11, BGAFF10OFF, bGhOnEy10, bgshOOp10, BGELIG0920
(these codes were not working in latest coupon update, but you can check them out anyway)
Price history and price alert
Do you need price history chart (for all/most countries) for Xiaomi Piston Colorful Version Earphones? There we go. The lowest price was: $3.99.
Price records source(s): 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)).