Impedance 32Ω, Transmission Distance 10m, Microphone Yes, Charging Time (h) 1-2h, Working Time (h) 4-5h, Frequency Response 20-20kHz.
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.
Updated:
Banggood
Warehouse in China.
Link: Xiaomi QCY A2 Bluetooth Earphone
$21.59 with coupon: BG20QCY
$24.29 with coupon: AFfbG10
Additional Banggood coupons:
1. First page
2. Second page
Price history and price alert
There is only one database record (it was for $17.99), 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)).