Transformers TF-T01 PRO Bluetooth Earphone Noise Reduction

Bluetooth version:5.4
IC: AB5636E
RF Power Rating: Class II RF                        
Transmission Range: 2402~2480MHz
Speaker Type: 10mm moving coil speaker
Transmission Distance: ≥10m
Battery: Headphone (30mAh) Battery compartment (300mAh)
Playback time: Music single headset about 4 hours (50% volume) 
Call single headset about 3.5 hours (50% volume)
Standby time: charge and discharge cycle ≥ 300 times
Charging time: headphones ≤ 1.5 hours battery compartment ≤ 1.5 hours
Charging voltage: 3.7V 
Accessories: Type-C charging cable