Frequency Response 20-20kHz, Microphone Yes, bluetooth Version V5.0, Standby Time (h) 350h, Battery Capacity Charging box: 400mAh, Charging Time (h) 1h, Transmission Distance 10m, 3.7V, 3.7V, Earphone: 37mAh*2, Impedance 32Ω, Charging Interface Type-C/ Wireless Charging, Working Time (h) 5h.
Check coupons or create price alert down below. Let’s see what best price is ATM.
Aliexpress
There’re some similar (or not) items on Aliexpress
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Click here to search by yourself. Here are coupons that you can use.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China. There are no coupons for this product in Banggood.
Link: Banggood product page
Price: $-3
It looks like this item is out of stock in Banggood. If you found it then please send me the link. I will replace it.
Click here to search on Banggood!
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): AFfbG10, EARSP11, BGTT10, bGhOnEy10, BGSS10%SW, bgshOOp10, BG11SHOP, BG4BW25, BGLOAC1
(system checks these coupons on every price check (like once per 24 hours), but you can check them out anyway)
Price history and price alert
Do you need price history chart (for all/most countries) for Baseus W04 Pro TWS Bluetooth Earphones? There we go. The lowest price was: $25.99.
Price records source(s): 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)).