696 SpecificationsSpecificationsGeneral points4 Recording format:WMA (Windows Media Audio)4 Input level:- 70 dBv4 Sampling frequency:[ST XQ] mode: 44.1 kHz[ST HQ] mode: 44.1 kHz[ST SP] mode: 22 kHz[HQ] mode: 44.1 kHz[SP] mode: 22 kHz[LP] mode: 8 kHz4 Frequency response:During recording mode(Microphone jack):[ST XQ] mode: 50 Hz to 19 kHz[ST HQ] mode: 50 Hz to 15 kHz[ST SP] mode: 50 Hz to 9 kHz[HQ] mode: 50 Hz to 13 kHz[SP] mode: 50 Hz to 7 kHz[LP] mode: 50 Hz to 3 kHzDuring recording mode(Built-in stereo microphone):80 Hz to 20 kHzDuring playback mode:20 Hz to 20 kHz4 Maximum working output:60 mW (8 Ω speaker)4 Maximum headphone output:≤_ 150 mV (according to EN 50332-2)4 Wide band characteristicheadphone output:75 mV ≤_ (according to EN 50332-2)4 Recording medium:Built-in NAND FLASH memoryWS-560M: 4 GBWS-550M: 2 GBWS-450S: 1 GB4 Speaker:Built-in ø 16 mm round dynamic speaker4 MIC jack:ø 3.5 mm mini-jack, impedance 2 kΩ4 EAR jack:ø 3.5 mm mini-jack, impedance 8 Ω ormore4 Input power requirement:Batteries: AAA battery (LR03) orOlympus Ni-MH rechargeable battery4 External dimensions:94.8 mm × 38 mm × 11 mm(without protrusions)4 Weight:46 g (including battery)4 Operating temperature:0°C - 42°C/ 32°F - 107.6°FGuide to recording times4 WS-560M (Built-in flash memory 4 GB):[ST XQ] mode: 69 h. 30 min.[ST HQ] mode: 139 h. 35 min.[ST SP] mode: 278 h. 10 min.[HQ] mode: 278 h. 10 min.[SP] mode: 547 h. 25 min.[LP] mode: 1,088 h. 05 min.4 WS-550M (Built-in flash memory 2 GB):[ST XQ] mode: 34 h. 30 min.[ST HQ] mode: 69 h. 40 min.[ST SP] mode: 139 h. 25 min.[HQ] mode: 139 h. 25 min.[SP] mode: 247 h. 10 min.[LP] mode: 544 h. 55 min.4 WS-450S (Built-in flash memory 1 GB):[ST XQ] mode: 17 h. 20 min.[ST HQ] mode: 34 h. 45 min.[ST SP]] mode: 69 h. 35 min.[HQ] mode: 69 h. 35 min.[SP] mode: 137 h. 00 min.[LP] mode: 272 h. 25 min.Notes• The above values are strictly rough guides.• Available recording time may be shorter ifmany short recordings are made(The displayed available recording timeand recorded time are approximateindications).