Microphone type: Capacitance
Pointing Features: Cardioid
Battery capacity : 1800MA
Input voltage: 220V
Speaker power: 4 4W
Signal to noise ratio: 85dB
Frequency response range: 150-20KHZ
Audio interface: 3.5mm stereo headphone plug
Built-in 1800MA lithium battery, charging is very convenient.
Charging time: 3 to 5 hours.
Play time: Fully charged intermediate volume 3-4 hours.
Power adapter requirements: Input voltage: 220V; Output voltage: 5V; Current 1A/2A