Nextar MA206 - Manual (Page 35)

Tempo rate (play submenu)
When playing music (MP3 format only) or
recorded files, different tempo rates can be
set (faster or slower) without changing the
pitch of the sound files
1. When playing music
2. Press MODE button to enter Play
Submenu is as follows:
3. Press  button to choose Tempo Rate
option
4. Press MODE button to enter Tempo Rate
interface is as follows:
5.Press  button to quicken tempo and
press  button to slow down tempo.