Edifier Comfo C Black Open-ear True Wireless Earbuds
Specification
Bluetooth         V5.4
Driver Unit       Φ12mm
Audio Codec   SBC, AAC
ENC                1+1 mics, AI algorithm
Playtime          7.5+22.5=30hrs
Fast Charging  15mins = 2.5hrs
Multi-point connection 
IP Rating            IP55
Earbuds weight   5.8g/ per side
APP                (control settings, Customized EQ)