UMIDIGI AirBuds U TWS Wireless Bluetooth Earbuds $29.99 Delivered @ umidigi eBay

Bluetooth version: BT 5.1
Effective Bluetooth range: 10m (open space without obstacles)
Battery Life: Airbuds U≧5 hours, With charging case≥24 hours
Charging time: 2 hours
Charging port: USB Type-C

Size & Weight: Earphones: 35.4320.3816.91mm, 4.3g (Single earphone)
Charging box: 44.140.525mm, 25.3g

Calling: ENC (Environment Noise Cancellation Technology)
Driver: ⌀13 mm dynamic
Frequency response range: 10 Hz - 10 kHz
Audio codec: SBC / AAC