Features: Bluetooth connectivity for cell phone calls, enabling hands-free calling and call recording. High-speed Bluetooth connection supports recording of phone call content. 0.96-inch LCD screen with speaker and external amplifier. Constructed from zinc alloy with electroplated one-piece lens. Equipped with 3.5mm headphone jack and Type-C fast charging port. One-key recording function supports MP3 and PCM linear recording with up to 3072Kbps o quality. Offers up to 48 hours of continuous recording time. Supports voice-activated recording and automatic file splitting. Compatible with multiple playback formats including MP3, WMA, OGG, APE, JQ-FLAC, WAV, AAC-LC, and ACELP. One-touch recording, dynamic noise reduction, 3072KBPS high-resolution o, voice-controlled recording, password protection, timer recording, e-book reading, segmented recording, speech-to-text functionality, listen-while-recording, automatic time stamping, recording playback, music playback, multiple sound effects, U-disk functionality, A-B repeat, external playback support, local file deletion, and fast forward/reverse playback. Built-in intelligent noise reduction chip delivers HD sound quality. Capable of long-distance recording up to 100 meters. Features 6D dual microphone system for HD 360-degree omnidirectional stereo sound capture. Voice-activated recording automatically starts when sound is detected, helping conserve storage space and reduce playback time for irrelevant segments. One-key operation ensures simple and reliable use, minimizing errors and ensuring no recording opportunity is missed. Variable speed playback allows speed adjustment without altering pitch, ideal for reviewing recordings or learning materials at different speeds to improve comprehension and retention. Intelligent file segmentation automatically splits recordings based on set time intervals (30/60/120 minutes) and saves them as separate files. Timer recording function allows preset recording times; device starts recording automatically without emitting sound or lights. Up to 48 hours of battery life with power-loss protection: recordings are automatically saved in case of power failure, preventing data loss. Supports multiple languages including Chinese, English, German, French, Italian, and Spanish. Specifications: Name: Recording Pen Model: A20 Recording Format: MP3, WAV Music Format: MP3, WAV, WMA, OGG, APE, JQ-FLAC, WAV Recording Quality: 3072KBPS NSR: 70dB Frequency Response: 20Hz - 20kHz Internal Memory: 32GB (stores up to 192 hours of recordings) Bluetooth Function: Supported Operating Time: Up to 48 hours continuous recording Standby Time: 30 days Built-in Battery: 3.7V 230mAh Recording Modes: Voice-activated, Manual Microphone: Built-in triple high-sensitivity microphone Language Support: Chinese, English, German, French, Italian, Spanish Headphone Jack: 3.5mm Charging Port: Type-C Dimensions: 101 x 22 x 10mm Color: Black Material: Metal Package Includes: 1 x Recording Pen 1 x User Manual 1 x 3.5mm Headset 1 x Type-C Charging Cable