Price history, coupons and price alert are available on this page. Let’s see what best price is ATM.
Bluetooth Version: Bluetooth 4.1, Number of Speakers: 2, Standby time: 48 hours, Freq: 150Hz-18KHz, S/N: 80dB, Working Time: about 4 hours, Battery Capacity: 4400mAh
Aliexpress
There’re some similar (or not) items 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
There is only one database record (it was for $46.36), so you can’t see price history chart.
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)).