Bluetooth Version: Bluetooth 4.0, Built-in chip type: Nordic 51822, IP rating: IP68, Battery Capacity: 480mAh.
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.
Updated: 02-08-2025
Banggood
Warehouse in China.
Link: Microwear X2 Plus Smartwatch
$21.59 with coupon: band10
$21.59 with coupon: AFfbG10
Additional Banggood coupons:
1. First page
2. Second page
Price history and price alert
Here is price history (for all/most countries) for Microwear X2 Plus Smartwatch. The lowest price was: $17.99.
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)).