【One-Touch Recording】Effortlessly capture audio with a single button press, perfect for lectures, meetings, and personal notes. 【Noise Reduction Technology】Advanced noise cancellation ensures clear recordings even in challenging environments. 【Expandable Storage】Built-in 8GB memory with TF card expansion slot for extended recording capacity. 【A-B Repeat Function】Customizable loop playback for efficient review and transcription of specific audio segments. 【Long Battery Life】Up to 20 hours of continuous recording or 10 hours of playback on a single charge. Specifications: CPU Model: Jili CPU Frequency: 24KHz Display: 0.8-inch LED screen, 128x64 resolution Internal Storage: 8GB Expandable Storage: TF card slot Audio Formats: MP3, WMA, OGG, APE, FLAC, WAV, AAC-LC, ACELP Recording Format: WAV (512Kbps, 1536Kbps), MP3 (64Kbps) Headphone Jack: 3.5mm stereo Max Headphone Output: (L) 9mW + (R) 9mW (320Ω) USB Interface: 3.5mm / DC 5V-1000mAh Distortion: 90dB Recording Current: 8mAh-13mAh Built-in Mic: Omnidirectional capacitor microphone Frequency Response: 24Hz Signal-to-Noise Ratio: 0.06% Built-in Speaker: Dynamic 25x10mm, 8Ω Speaker Output: 800mW Operating Temperature: -10°C to 40°C Battery: Lithium-ion Recording Time: Approximately 20 hours Playback Time: Approximately 10 hours (with headphones)