This Voice Recorder is great for investigations. Lightweight and only about 4 inches long. Dual microphones and no AAA or AA batteries needed. Simply charge up with the USB cord before the investigation and easily record throughout the night. High quality recording for 96 hours.
Memory: 16 GB Recording format: MP3, WAV Recording bit rate: 1536 Kbps Recording storage: High-quality recording for 96 hours / normal recording for 136 hours Recording sources: Telephone recording, built-in MIC Internal Battery: 220 mAh Product dimensions: 3.8 x 1.3 x 0.47 in.