Olympus DP-20 Specifications
| Recording Format | WMA |
| Recording Media | Built-in 1GB flash memory |
| Recording Time | HQ mode: Approximately 67 hours, 00 minutes
SP mode: Approximately 131 hours, 00 minutes |
| PC Interface | N/A |
| Folders Messages | 99 messages per date |
| Overall Frequency Response | HQ mode: 70-13,000 Hz
SP mode: 70-8,000 Hz |
| Speaker | 36 mm round dynamic speaker |
| Practical Maximum Output | 200 mW |
| Microphone Jack | N/A |
| Power Supply | Two AAA alkaline (LR03 or R03) batteries or Two AAA NiMH rechargeable batteries |
| Earphone Jack | 3.5 mm, impedance 8 ohms (mono) |
| Battery Life | Alkaline: Approximately 63 hours (SP mode) |
| Size | 3.7 x 2.0 x 0.7 inch (95 x 50 x 18.2 mm) |
| Weight | 2.8 oz. (78 g), including batteries |
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