Basically copy coupon, view price history or create e-mail price alert. Let’s see what best price is ATM.
Product size: 164x 140x 70mm (holder included), Power input: AC100 – 240V 0.75A / 50 – 60Hz, Speaker power: 3Wx 2
Aliexpress
I could not find it on Aliexpress. Click here to search by yourself.
Here are coupons that you can use.
Latest price update (UTC time):
Price history and price alert
Do you need price history chart (for all/most countries) for Siroflo PW007 Bluetooth Speaker Charger? 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)).