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