... LCD screen Philips PNX-0107 solution, Added professional stereo recording Chip Recording format: Hi-Fi Stereo MP3 format Sampling rate: ... 44.1KHz Double directional digital high-sensitivity microphone 5 Optional recording types:PCM, SHQ, HQ, SP, LP, SLP. ... 8kbps/8KHz: 1160hours(4G), 2320hours(8G)Timer recording: it will start to recording automatically at the appointment time. Reduce noise ...