Specification:
Systerm Frequency Response: 20Hz-20kHz
Frequency: 570mhz-579mhz
Transmission range: within 15m, the maximum range is 30m (accessible)
Latency: less than 4ms
Power Supply: Built-in 3.7V 700mah rechargeable lithium battery
Charging time: 2 hours
Work time: 7 hours
Charging port: micro USB
Product size: 11.8*4.5*1.5 cm (transmitter and receiver)
Charging cable: about 21cm (1*USB socket, 2*MicroUSB socket)