Aliexpress
Click here… to search for LEMFO LF17 Smartwatch on Aliexpress
Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China. I found coupon for you. Check this out.
Link: Banggood product page
Coupon (100.23 USD): PICODICOM
(CouponsFromChina.com tip: you should apply the coupon in your 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): 502C6B, e2bcea, TTxBG10, quad30, aff7off, BG3CSUM, bgssaff9
(you can check these old coupons out, but these probably won’t work)
Price history and price alert
Price history (for all/most countries) for LEMFO LF17 Smartwatch is here.
Price records source(s): Gearbest, Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).