Extra Bass / Answering Phone / HD Microphone / Song Switching / Voice Control / CVC Noise Reduction / Line-in / TF Card Play / Battery Indicator.
Aliexpress
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Here are coupons that you can use.
Updated: 02-08-2025
Banggood
Warehouse in China.
Link: Sound Intone P30 Headphones
$24.41 with coupon: AFfbG10
Additional Banggood coupons:
1. First page
2. Second page
Price history and price alert
Check out price history chart (for all/most countries) for Sound Intone P30 Headphones. The lowest price was: $19.74.
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)).