S1A Keychain Mini Smart AI Voice Recorder 1. Mini lightweight design: 4.6x1.57x1.57cm, only 22.7g. Equipped with key ring, easy to hang on keys, backpacks or neck for portable carry 2. Sleek bullet-shaped metal shell, split screw cap, Type-C charging port, stylish minimalist outlook 3. Powerful AI Intelligent Functions (Bluetooth 5.3 connect to mobile APP) Real-time audio-to-text transcription: Convert recording to text while capturing audio. Directly export full text after long meetingsclasses without missing key details, no manual note-taking needed AI intelligent summary: Auto extract core viewpoints, meeting overview, follow-up tasks and AI suggestions for quick review Auto mind map generation: Sort complex information with clear logical hierarchy, improve efficiency of review & report Multilingual instant translation: Support 256 languages, provide simultaneous interpretation for cross-border meetings & two-way conversation translation to break language barriers 4. Private cloud multi-terminal synchronization: All audio files sync between mobile APP, web dashboard and cloud server for safe storage & easy access 5. Wide Application Scenarios：Business meetings, class lectures, international communication, academic interviews, daily interviews and more 6. Built-in 250mAh battery provides up to 16 hours of continuous recording on a full charge. 7. Recording format: WAV 8. Playback formats: MP3, WMA, WAV 9. Material: Brass