Bluetooth specification: V4.1
Buletooth profile: support A2DP1.2/AVRCP1.4/HFP1.6/HSP1.2
Drive dimension:40mm
Impedance:32 om
Voltage:3.3-4.2V
Frequency range:20-20000Hz
RF range: 10m
S/N:>75dB
Distortion:<0.5%
Playback time:>=16 hours
Charging time:<=2.5 hours
Built-in lithium battery: 3.7V/400mAh
Net:213.8G