Plug and play.
Specification:
Item Type: Microphone Amplifier
Product Material: ABS, aluminium alloy.
Power Supply: DC 5V
Interface: Approx. 3.5mm / 0.14in
Battery: 250mAh 502030 lithium batter, with built in battery.
Package List:
1 x Microphone Amplifier
1 x Power Cord
1 x Headphone Cable