Display: 1.39 inch AMOLED screen, CPU: MTK6580 Quad Core 1.0GHz, WCDMA: 850/2100MHz, SIM type: single nano SIM, Functions: GPS, Heart Rate Monitor, Pedometer, Message, Music, Weather, Clock, Browser, WiFi, System: Android 5.1.
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:
Banggood
Warehouse in China.
Link: Zeblaze THOR S 1/16GB Smartwatch
$119.59 with coupon: 12annvex-8%
$120.89 with coupon: aff7off
Additional Banggood coupons:
1. First page
2. Second page
Price history and price alert
Check out price history chart (for all/most countries) for Zeblaze THOR S 1/16GB Smartwatch. The lowest price was: $102.55.
Price records source(s): Gearbest, 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)).