Price history, coupons and price alert are available on this page. You probably want to know what is the best price?
Second, Bluetooth 5.0 chip, Third, the use time is 2 hours, First, standby time 100 hours
Aliexpress
I could not find it on Aliexpress. Click here to search by yourself.
Here are coupons that you can use.
Latest coupon and price update (UTC):
Price history and price alert
Do you need price history chart (for all/most countries) for Gocomma K2 TWS Earphones? There we go.
Price records source(s): Gearbest
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)).