press twice in a row to turn off the output., Input 5V2A, 1A*2, Interface Type-C, 18650 / With Board 18650 / 20700 / 21700, (Length 65-72mm), Charging cutoff voltage 4.20±0.05V, Charging cut-off current <150mAh, Function key Short press to check the power, Operating temperature 0-65°C, USB OUT 5V2A, Brand ASTROLUX, Supported Battery Types 3.6V/3.7V/ Li-ion/IMR/INR/ICR: , Model BC2, Charging current 2A*1. You can create price alert here, copy coupons and view price history. 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. We have found one coupon for this product!
Link: Banggood product page
1. ($12.46): BG10OFFAFF1
just apply this code 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): mabc2, BGASTROLUX, BGABC2, FIN1784, BG1128, BGAST25, BG21SPS, BG4771
(there’s a little possibility that old coupon will work)
Price history and price alert
Here is price history (for all/most countries) for Astrolux BC2 2-in-1 Type-C USB Battery Charger Power Bank. The lowest price was: $8.9.
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)).