Charging Type: Dock charging, Sensor G-sensor, Standby Time: About 504 hours, Display Size: 1.91 Inch, SIM Card: eSIM, Heart Rate Sensor, Resolution: 402x 476 pixels, Type: AMOLED, GPS: Support, WiFi: Support, Charging Time: About 1.25hours, Battery Battery Capacity: 430mAh, CPU Quad-core 1.2 GHz Cortex-A7, Internal 1GB+8GB, Network Frequency: 2G/3G/4G, Using time: About 40 hours.
You can create price alert here, copy coupons and view price history. You probably want to know what is the 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. There is one coupon right now! Check this out.
Link: Banggood product page
1. ($477.12): BG51f436
you should apply the coupon in your 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): BGOPPOW, bgwp, Email5, 13f142, BGSWATCH10, 6GSGIT
(probably won’t work, but you can try them out)
Price history and price alert
Do you need price history chart (for all/most countries) for OPPO Watch 46mm Smart Watch CN? There we go. The lowest price was: $413.99.
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)).