Description of bluetooth keys

1. Power on key/telephone connect/pause/play button

2. Volume up/next button

3. Volume down/up button

4. The microphones

5. USB charging port

Bluetooth parameter information

Frequency range: 20-20khz

Sensitivity: 95DM

Impedance: 32 ohms

Transmission distance: CLASS Ⅱ

Operating range: 10M

Horn size: 32mm

Charging time: 2H

Duration: 3-6h

Battery: 160-180ma polymer lithium battery

Accessories: data cable + instruction manual

Bluetooth protocol: 4.1

Bluetooth search name: bt-01

size：30*21cm     weight：125g    

Material: acrylic

Accessories: USB data cable + instruction manual

Bluetooth: 4.1

Product name: bluetooth knit cap