Recording Format DSS(LP/SP)/WMA(HQ/SSP/SHQ) Recording Media 64 MB Built-In Flash Recording Time 22 hours 20 min (LP), 10 hours 25 min (SP), 4 hours 20 min (HQ) 2 hours 10 min (SSP) , 1 hour 5 min (SHQ) Input Level -70 dB. LCD Large, backlit LCD screen LED Yes Folders Messages Five (5) folders capable of storing up to 199 files each Sampling Frequency SHQ 44.1kHz:128kbps, SSP 44.1kHz:64kbps, HQ 44.1kHz: 32kbps,SP 12kHz:13.7kbps, LP 8kHz:6.3kbps Overall Frequency Response SHQ 100-17000Hz ,SSP 100-8000Hz ,HQ 100-7000Hz, SP 200- 5000Hz, LP 200-3000Hz LP Mode Yes Voice Activation Yes Practical Maximum Output 200 mW Write Protection No Speaker Built-in 23 mm round dynamic speaker. Microphone Jack 3.5 mm mini-jack, impedance 2 k W. Earphone Jack 3.5 mm mini-jack, impedance 8 W. Power Supply Rated voltage: 3 V DC. Batteries Ni-MH Rechargeable Battery Pack (BR402) or two (2) AAA batteries or two (2) Ni-MH rechargeable batteries (BR401) External Power Supply No Battery Life Alkaline: Recording (approx. 16 hours); Playback (approx. 9 hours) Ni-MH Rechargeable: Recording (approx. 12 hours); Playback (approx. 8 hours) Size 122 x 37.5 x 17.5 (mm) Weight 80 g