2. When you have finished recording and do not want to change it anymore,you can click the 'REC' button four times in a row to lock the recording. After locking the recording, the 'REC'button will be invalid.
3.If your recording has been locked and you want to record again,you can click the 'REC' button four times in a row again to unlock it.
4.Click the 'REC' button five times in succession to clear the recording
