bluetooth Version Ver 5.0+BLE 5.0, Operating System Android 10.7, “Battery Capacity: 1260mAh Polymer battery + 1000 mAh charging bank Standby Time: About 1-2 days (Anddoid mode) / 3-5 Days (Lite Mode) Charging Time: About 2 hours Charging Type: Magnetic Charging”, Operating Mode Full Touch+Press Button, APP Name GaoFit, Model Optimus 2, “CPU: Helio P22 Octa-core (MT6762+PAR2822) RAM: 4GB ROM: 64GB”, Brand KOSPET, Anddoid Mode+ Lite Mode (also support calling and sms), “Size: 1.6 inch Type: IPS Resolution: 400*400pixels”, Camera 13MP rotatable camera with flashlight, Compatible OS Above iOS 9.0 and Android 5.1.
Price history, coupons and price alert are available on this page. 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 price update (UTC time):
Banggood
Banggood warehouse is located in China. There is one coupon right now! Check this out.
Link: Banggood product page
1. ($183.99): BG8OFFCOUPON
apply code in your basket (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): BG77OP2, BGKPOP2, BGissaKOSPET, BGissaKP2, BG0a98bc, BG16d0da, BG11OP2, BG00f6d2, BGBFOP2, BG91a232, BG03fb20, BG0cd94f, BG2202FANS10, BG70749b, BG5ec37e, BGa7cb6f, 8wEbgaInS5, BG8ReviTrage
(these coupons are old, so probably won’t work)
Price history and price alert
Price history (for all/most countries) for KOSPET Optimus 2 4/64GB 4G-LTE Smart Watch is here. The lowest price was: $169.99.
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)).