665SpecificationsSpecificationsExternal dimensions113.5 x 50.0 x 17 mm(without protrusions)Weight110 g (Including Ni-MH RechargeableBattery Pack)* Specifications and design are subject tochange without notice.* Battery life is measured by Olympus. Itvaries greatly according to the type ofbatteries used and the conditions of use.Recording formatDS2 (Digital Speech Standard Pro)Recording mediamicro SD, SD-card: 512 MB to 8 GBInput level -70 dBvSampling frequencyQP mode: 16 kHzSP mode: 12 kHzOverall frequency responseQP mode: 200 to 7,000 HzSP mode: 200 to 5,000 HzRecording time (512 MB Card)QP mode: 38 hours 45 minutesSP mode: 79 hours 30 minutesAlkaline battery lifeRecordingQP mode: Approx. 24 hoursSP mode: Approx. 32 hoursPlaybackAll mode: Approx. 13 hoursNi-MH Rechargeable Battery lifeRecordingQP mode: Approx. 20 hoursSP mode: Approx. 28 hoursPlaybackAll mode: Approx. 10 hoursSpeakerBuilt-in ø23mm round dynamic speakerMIC/EAR jackø3.5 mm mini-jack, impedance MIC2 kΩ, EAR 8 Ω or moreMaximum working output (3 V DC)250 mW or more (8 Ω speaker)Input power requirementRated voltage: 5 VBatteries: Ni-MH Rechargeable BatteryPack or Two AAA batteries(LR03 or R03) or Two Ni-MHrechargeable batteries