Compatible OS Android 6.0 or above; iOS 11.0 or above, Bluetooth Version BT5.1, Brand Haylou, APP Name Haylou Fun, Operating Mode Full Touch Screen, Model LS09A.
Just check coupons out (with price alert and history). Best price?
Aliexpress
There’re some similar (or not) items on Aliexpress
You can use link bot to get even lower price:
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.
Link: Banggood product page
1. ($44.96): BGc70579
2. ($44.96): BGbf11dd
apply code in your basket (cart) after clicking “Proceed to checkout”. Click to copy code and open shop.
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): BG824df2, BGd984f1, BG213e23, BGJP09A, BG0b39f5, BG3ac771
(there’s a little possibility that old coupon will work)
Price history and price alert
Do you need price history chart (for all/most countries) for Haylou GS LS09A Smart Watch? There we go. The lowest price was: $32.99.
Price records source(s): 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)).