The file size will depend on which mode you’re recording in and which format you use.  Using a Philips LFH-9600 Digital Pocket Memo, I made a 1 minute recording using three file formats.  Below are my findings.

 Format

Recording Length

File Size

.DS2

1 minute

214 KB

.DSS

1 minute

105 KB

.WAV

1 minute

1,320 KB

 Verification Source:  In-house testing

Test Date: 2.13.12