8GB OF INTERNAL MEMORY - Lets you store up to 650 HOURS of recordings without the need for additional memory cards. RECORD CRYSTAL CLEAR AUDIO - Double ultra-sensitive microphones with dynamic noise reduction Means you can enjoy crystal clear recordings even while you're up to 40ft away or to record quiet, discreet conversations. EASILY TRANSFER FILES TO MAC OR PC - Just connect the recorder to your computer using the supplied USB cable and drag the files over to your PC. FAST CHARGE - Fast charge via mini USB port, Built-in high capacity rechargeable battery. LANDLINE PHONE RECORDER - Telephone recording function allows you to record detailed conversations, direct from your landline phone. Best sound will be with Cordless Phone. Built-in mic: Omani-directional microphone External: Dynamic 20mm,16ohm S/N(ratio): 80db Display: 128 x 64 lattice screen Interface type: USB 1.1/USB2.0 Record audio format: MP3,WAV Supported music file: MP1/MP2/MP3/WMA/WMV/ASF/WAV Operating temperature: 0~40 Support Languages: Multi-language Battery(full charge): Recording: up to 10 hours; Charging time: 4-5 hours. Record times: SHQ(192kbps): 5520 mins; HQ(128kbps): 7680 mins; SP(64kbps): 16920 mins; LP(32kbps): 33120mins Frequency: 20Hz-20KHz Max output: 300mW Storage media: Embedded flash Size: 3.3" x 1.3" x 0.5" 1 x Digital Voice Recorder 1 x Earphone 1 x USB Power Cable 1 x User Manual Please compare the details before you purchase. Please allow slight size differences due to different manual measurement.