Price history, coupons and price alert are available on this page. Let’s see what best price is ATM.
Bluetooth Version: 4.1, IP67 Waterproof Rating, Lithium-ion Polymer 85mAh, 3.7V
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
It doesn’t make sense to generate price history chart, because there is one price record which is: $11.54.
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)).