Driver unit: 57mm, Frequency response: 20~20KHz, Impedance: 16ohms, Working Time: Talk time: 45 hours; Music playing time: 40 hours.
Basically copy coupon, view price history or create e-mail price alert. Let’s see what best price is ATM.
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 price update (UTC time):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
1. ($31.91): AFfbG10
2. ($32.98): aff7off
you should apply the coupon in your cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): 502C6B, e2bcea, TTxBG10, 2019SPEDM, BG3CSUM
(there’s a little possibility that old coupon will work)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. China – Bluedio HT H-Turbine Headset Black ($-3)
Price history and price alert
Check out price history chart (for all/most countries) for Bluedio HT H-Turbine Headset White. The lowest price was: $21.99.
Price records source(s): Gearbest, 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)).