Check coupons or create price alert down below. You probably want to know what is the best price?
Charging Time.: 1 – 2h, Frequency response: 20-20000Hz, Impedance: 16ohms, Sensitivity: 93dB ± 3dB
Aliexpress
There’re some similar (or not) items on Aliexpress
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. There are no coupons for this product in Banggood.
Link: Banggood product page
Price: $-3
It looks like this item is out of stock in Banggood. If you found it then please send me the link. I will replace it.
Click here to search on Banggood!
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): b49001, e2bcea, TTxBG10, aff7off, AFfbG10, BG20QCY
(probably won’t work, but you can try them out)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. China – QCY T1 Pro TWS V4.2 Earphones White ($-3)
Price history and price alert
Price history (for all/most countries) for QCY T1 Pro TWS V4.2 Earphones Black is here.
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)).