The equipment which used for recording, the recording time is one of the most important technical specifications. According to the difference of capacity and recording bit rate, the recording time of product is different. For the voice recorder, the most common capacity is 8GB on the market right now, the storage space of voice is less than video. If recording voice with 128Kbps, the max recording time is up to 144hours. For the video recorder, the most common capacity is 32GB , if taking video under 1080p, the max. The recording time is up to 4hoursThis can meet the needs of most people. if recording voice or video with high recording bit rate or resolution, the recording time will shorter, but the quality will improve.