Go down and check coupons out. Remember to check price history if it is available. Best price?
Charging port USB Type-C, Audio codec SBC / AAC, Driver 13 mm dynamic, Calling ENC (Environment Noise Cancellation Technology), Charging box Charging box: 44.1*40.5*25mm, Color Ceramic White / Rock Red / Cosmic Black, Battery Life “AirBuds U: Up to 5 hours of listening time with a single charge Up to 4 hours of talk time with a singel charge AirBuds U with charging box: Up to 24 hours of listening time Up to 20 hours of talk time”, Brand model UMIDIGI Airbuds U, Weight about 30g, Sweat and Water Resistant Sweat and Water Resistant: IPX5 (earphones), bluetooth version BT 5.1, Charging time 2 hours, Effective bluetooth range 10m (open space without obstacles), Earphones 35.43*20.38*16.91mm, Frequency response range 10 Hz – 10 kHz
Aliexpress
There’re some similar (or not) items on Aliexpress
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 Hong Kong. There are no coupons available at this moment 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!
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BG4ea068, BG6fffd9, BGAUDIO, BG9ba0e8, BG6de015, BG1b5830, BGAudio3
(these codes were not working in latest coupon update, but you can check them out anyway)
Price history and price alert
Price history (for all/most countries) for UMIDIGI AirBuds U Bluetooth 5.1 Earphones ENC is here.
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)).