Awei A997 Pro ANC Wire...

Bluetooth version: V5.3, JL7006
Supported protocols: A2DP/AVCTP/AVDTP/AVRCP/HFP/SPP/SMP/ATT/GAP/ GATT/RFCOMM/SDP/L2CAP profile
Channel system: dual channel
Battery capacity: built-in 300mAh
Bluetooth mode music time: 24 hours
Noise-reduction mode music time: 17 hours
Talking time: 24 hours
Charging time: 2.5 hours
Horn size: 40mm
Horn impedance: 32Ω
Horn sensitivity: 110dB ± 3dB
ANC noise reduction: 22dB ± 3
Best call distance: <1m
Maximum transmission distance: 10m
Wearing method: head-mounted
Interface: Type-C
Net weight: 245g