Aliexpress
Here are coupons that you can use.
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. Europe – BlitzWolf BW-BH2 Bluetooth 5.0 Earphone [EU] (-3 USD)
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
Coupon (6.99 USD): BGdcec12
Coupon (19.54 USD): BGAlerabatKL
(CouponsFromChina.com tip: put item in your cart and apply coupon code there 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): BGBWBH2, BGBH222, BW-LT22, AFfbG10, BGBWBH299, BGVDay10%off, EARSP11, BGAFF10OFF, bGhOnEy10, BGBWUU1, BGSS10%SW, BGBW152, 13f142, bgshOOp10, BGELIG0920, BG11SHOP, BGHU0232, 10%ForNewBW, BGLOAC1, 10%ForBGBW, BGa0b145, BGBuscape01, BGHOTSHOP15, BGYBBH2, BG7ad545, BGd173b4, BG592ef8, BGAudioVideo
(these codes were not working in latest coupon update, but you can check them out anyway)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. Europe – BlitzWolf BW-BH2 Bluetooth 5.0 Earphone [EU] (-3 USD)
Price history and price alert
Here is price history (for all/most countries) for BlitzWolf BW-BH2 Bluetooth 5.0 Earphone.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).