Power supply (adapter): DC 5V/1A Battery: Built-in 3.7V/1800mAh (usable time about 8 hours) Power indicator (LED): Power on: white light; Charging: red light; Low battery status: 2 minute beeps Charging time: (power off) about 2 hours Charging interface: TYPE-C interface<br><br>Sound card function: Built-in battery use: Yes Use while charging: Yes Low power indicator: Yes Sound adjustment: Yes Lighting adjustment: microphone/accompaniment/monitoring/recording volume adjustment Sound effect button: 1 button Bluetooth switch: support Function keys: 13 keys Condenser microphone input: 1 channel (3.5 ports) Headset output: 1 channel (3.5 ports) Headphone output: 1 channel (3.5 port) Live broadcast interface: 1 channel (3.5 port) Dynamic microphone input: 1 channel (XLR female socket) 48V input: 1 channel (XLR female socket) OTG interface: 1 channel (TYPE-C port) Analog audio output: /RT, stereo Dynamic range 1kHz: 105dB Crosstalk: -106dB Signal-to-noise ratio: 85dB Output level (Vrms): Vrms (1.0~2.0V 10kR) Headphone output power: 5 mW x2CH Frequency response: 5MHz (Less than-3dB) Material: abs colour: Black<br><br>Package Contents: 1 x TYPE-C data cable 1 x double TYPE-C OTG cable 1 x 4-section audio cable 1 x sound card<br><br>Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.