Aliexpress
Click here… to search for Bakeey SE01 Smart Watch on Aliexpress
Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China. I have no active coupons for you right now.
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!
Old coupons (from the oldest to the newest): BGSE01, BGBK15, BGBAK15, BGSE019, BGAFF10OFF, band10, BGSS10%SW, BGCuponation10, BGWRIBAND10, 6GSGIT, BG51f436, BGc70579, BGbf11dd
(I don’t think these’re gonna work, but you can try ’em out anyway)
Price history and price alert
Price history (for all/most countries) for Bakeey SE01 Smart Watch is here.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).