Aliexpress
Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China. There is one great coupon!
Link: Banggood product page
Coupon (58.90 USD): BGAlerabatKL
(CouponsFromChina.com tip: 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
Old coupons (from the oldest to the newest): ip25, 50se1, 502C6B, ZEAsue, TTxBG10, 2019SPEDM, BGss506, bgssaff9, AFfbG10, BG20CES, BGVDay10%off, EARSP11, BGAFF10OFF, BGTT10, bGhOnEy10, 7d18f7, BGSS10%SW, bgshOOp10, BGELIG0920, BG11SHOP, BG4BW25, BGLOAC1, 13f142, BGBuscape01, BG651551, BGBRPL2, BGHOTSHOP15
(these codes were not working in latest coupon update, but you can check them out anyway)
Price history and price alert
Check out price history chart (for all/most countries) for ZEALOT S16 Bluetooth Speaker.
Price records source(s): Gearbest, Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).