Recording Quality Builtin 8GB storage capacity; can save up to 12 hours of recorded files. Bit rate options: 1536 Kbps, 512 Kbps, 256 Kbps, 128 Kbps, 32 Kbps. Higher bit rates provide higher quality recordings. Intelligent Recording Function Voice activated recording; automatic recording when there is sound and automatic pause when there is no sound. One click recording for quick start. Recording scene options and active noise reduction for clearer audio. Powerful Battery & Large Memory Builtin 270 mAh rechargeable battery; up to 10 hours of continuous recording. Internal storage options: 8GB, 16GB, 32GB; up to 12 hours, 24 hours, 48 hours of recordings at the maximum bit rate. Multiple Playback Modes Loop playback and sound mode selection. AB repeat (repeat reading) function to replay a selected section between points A and B. Supports MP3, WMA and other lossless music files. Use scenarios Meetings and lectures: capture clear notes with voice activation and noise reduction for easier transcription. Field interviews: long recording sessions with multiple storage options to ensure you do not run out of space. Studying and language practice: use the AB repeat feature to reinforce difficult passages and improve retention.