Features: 1. Portable and practical, the voice recorder can be taken anywhere to record audio of meetings, conversations, phone calls, and other situations. 2. Ultra-thin shape, small size. Perfect for recording interviews and meetings. 3. Ensure to insert TF card before recording. 4. The recorder will take 2-3 hours to be charged fully after connect with computer via USB cable. The indicator will flash whilein charging status. the indicator will become blue when fully charged. 5. The recording time is about 3 hours. 6. TF card recording size: 2GB, about 20 hours. 7. Max support TF card size: 32GB Specifications: Name: USB Flash Memory Digital Audio Voice Recorder TF Card Slot Item size: 70 x 21 x 9mm Color: black, white Package includes: 1x USB Voice Recorder 1x TF Card(Optional)