Right now the best price with coupon code for MK66 1.85 inch Smart Watch is $47.99 (in Banggood). Go down and check coupons out. Remember to check price history if it is available. Let’s see what best price is ATM.
MK66 1.85 inch HD Screen bluetooth Calling Heart Rate Blood Pressure SpO2 Monitor IP68 Waterproof Outdoor Three-proofing Smart Watch – Black
Latest price update (UTC time):
Banggood ($47.99)
Banggood warehouse is located in China. I don’t think there is an active coupon right now – at least in my database. Is it a reasonable price for this item? Maybe there’re no more promotions for this item, because current price is higher than average (which is equal $26.69)
Link: Banggood product page
Price: $47.99
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BG6cc351, BG734631, BGb0f219, BG760a29, BG55006a, BGa78c77, BG283218, BG454646, BGe468dc
(probably won’t work, but you can try them out)
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Price history and price alert
Check out price history chart (for all/most countries) for MK66 1.85 inch Smart Watch.
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)).