Voltage: 5V.
Price history, coupons and price alert are available on this page. You probably want to know 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 coupon and price update (UTC):
Banggood
Banggood warehouse is located in Europe 
. I don’t know if this is a good price – number of records in my database is too low!
Link: Banggood product page
1. ($21.85): tRaDetRaCKeR
2. ($21.85): 8wEbgaInS5
3. ($22.09): 2203ActiesNL
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): BGLED2203, MVC8SPRING, 8BGwbg2204
(system checks these coupons on every price check (like once per 24 hours), but you can check them out anyway)
Price history and price alert
It’s a new item in our database, so I can’t create price history chart. We have saved this price in database: $20.9.
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)).