Material: ABS

Color: Black

Receiver battery capacity: 220mAh

Microphone endurance: 6-8hours

Box size: about 9.3*3*12.7cm

Product size: about 8*2*1.5cm

Receiver connector: 3.5mm diameter

Microphone: digital silicon microphone

Bluetooth version: 5.0

Input voltage: 5V

Signal to noise ratio: ≥60dB

Frequency response: 20HZ-20KHZ

Transmission distance: 20 meters

Quantity: 1

Package included: 

2*rechargeable mini microphone

1*Receiver

1*Charging cable

Note : the other accessories are not included