BS-21
Bluetooth version V5.0
Chip AC6921A
Drive power 4dBm
Frequency 2402MHz-2480MHz
Distance 10M
Supported formats WMA/APE/MP3/FLAC decoding
Supported codecs WMA/APE/MP3/FLAC
Codec License None
Speaker device Internal magnetic horn
Rated power 20W*2
Diaphragm parameters Air duct device
Frequency response 20HZ-20KHZ
Signal to noise ratio 80db
Rated impedance 4 ohms
Total Harmonic Distortion 1%
Microphone device None
Sensitivity none
Power switch/volume/play pause five-key operation + remote control
File Format WMA/APE/MP3/FLAC
Storage Device Type WMA/APE/MP3/FLAC
data transfer none
Input audio source: Bluetooth/TF card/coaxial/3.5mm/USB/FM
Relevant certification FCC/CE/BQB/ROHS
Waterproof IPX IPX4
Power type 18650 aluminum polymer battery
Rated voltage 3.7V
Battery life or battery charge and discharge times 500 times
Battery capacity 2000mAH
Battery charging rated charging voltage and current (overcharge protection circuit reference) Overcharge protection (4.30±0.05)V/Overdischarge protection (2.4±0.1)V
Battery certification IEC62133 testing certification
Charging mode DC 5V 1.4A
Charging time about 3H
Play/talk time Use time at 70% volume (the phone volume is adjusted to the maximum) about 3H
Use time at maximum volume (speaker phone volume is adjusted to the maximum) about 1.2H
Talk time no
Standby time 120H
Volume segment 0-15
Size/Weight Size 500*62*69mm (L*W*H)
Reset function Hardware reset function
Radio device built-in radio
Radio band FM87.5-108
