The Singing Machine SMC2068 Instruction Manual page 10

Connections
To connect optional wired microphones:
u
Lights Mode
u
Cradle
1
2
v
There are 3 built-in light modes. Repeatedly
press the
lighting effects.
PULL
— E9 —
Plug the wired
(not included) into the Mic jack
marked u or v (depending on
preference).
The corresponding mic indicator
light will blink to indicate a
successful connection.
/ button to switch between
microphone