Aliexpress
Here are coupons that you can use.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China. So I have checked for active coupons (all category coupons and old ones), but there was no working coupon in Banggood.
Link: Banggood product page
Price: -3 USD
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
Old coupons (from the oldest to the newest): BG69a3bf, BGAlerabatKL, BGAlerabat1, BGYBXT82, BG2b6b06, BGd173b4, BGAudioVideo, BGAUDIO, BGFEU22, BG1b5830, BGAudio3, BGAudio9
(these coupons are old, so probably won’t work)
Price history and price alert
Here is price history (for all/most countries) for Lenovo XT82 TWS Bluetooth 5.1 Earphones.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).