Portable and practical, the recorder can be taken anywhere to record audio from meetings, conversations, phone calls, monitoring and other situations that require an unobtrusive recording method. Use the pen to repeat the instructions on the phone. Or help remember customer names. This pen will work great. This voice recorder will work perfectly.Features:1. Ultra-thin shape, small size.2. Mini Portable - The mini size makes it hard to spot, easy to place and carry anywhere you want.3. This digital recorder can record for a long time.4. Rechargeable lithium-ion battery, durable and easy to use.5. Support TF card, this keychain recorder has large capacity and convenient transmission.6. Support music playback function, audio format is WAV.7, USB 2.0 interface, support win2000 and above.