bluetooth Version V5.0, 3.7V, Standby Time 25h, Impedance 32Ω, Receive Sensitivity 110dB, Earphone: 43mAh*2, bluetooth Chip Realtek8763BRC, Working Time (h) 3-4h, Frequency Response 20-20kHz, Transmission Distance 10m, Microphone Yes, Charging Time (h) 1.5h, 3.7V, Battery Capacity Charging box: 380mAh.
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 coupon and price update (UTC):
Banggood
Banggood warehouse is located in Europe 
. I’m not sure about the price, coz I have only 1 record(s) in my database.
Link: Banggood product page
1. ($25.51): BGAFF10OFF
2. ($25.51): BGTT10
3. ($25.51): bGhOnEy10
put item in your cart and apply coupon code there after clicking “Proceed to checkout”. Click to copy code and open shop.
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): BGGT2, 502C6B, BGGT2DE, BGGT222, BGGT2PL, BGGT233, AFfbG10, BGGTXM2, BGGT2BF, BGGT277, BGTWS20, BGGT2CF, BGVDay10%off, BG20TWS, BGGT202, BG20HAY, bgshOOp10
(sometimes old coupons work, so you can check them out (this site checks them on every price update))
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. China – Haylou GT2 TWS Earphones ($-3)
Price history and price alert
We don’t have enough records in database to show price history for this item. BTW: We have only recorded this price: $20.99.
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)).