4GB Necklace Voice Recorder for Lectures, Interviews, and Meetings with HD Noise Reduction Features: - Material: Zinc alloy - Color: Black - Size: 4.2x3.7x0.96cm (1.65x1.45x0.38in) - Recording time: Up to 35 hours - Formats: WAV (recording), MP3/WMA/WAV (playback) - Sampling rate: 48KHz - Battery: 120mAh, supports charging while recording Key Functions: - Pendant design for easy portability (lanyard not included) - One-key operation for quick start/stop and auto file naming - 4GB storage for extended recording sessions - Noise reduction for clearer audio capture - Voice-activated mode to save power and storage Ideal for lectures, classes, meetings, and interviews. Package includes: - 1 voice recorder - 1 instruction manual - 1 headset - 1 power cord