User Manual
Table Of Contents

Back Function Introduction
1.HOLD (ON/OFF): lock / unlock the switch control (before starting up, you shall pull the key
to OFF position). - ON: key lock - OFF: Unlock
2. Volume - / Volume +: Volume control switch can adjust the volume when playing.
3. Headset hole: Headset interface. 4. USB 5V: Power supply input.
5. Reset hole: Short-press to turn off.
Charging Instructions
Inspect that if the power supply and voltage on the power adapter board matches with the
local power supply.
1. Insert the power adapter cable in >>USB 5V<< socket.