Digital voice recorder with a 16GB high-capacity lithium-ion battery and one-button recording function. You can manage it with a computer. It has hardly been used. The earphones are unused. The USB-C connector was used for the first time to confirm operation this time. There is no instruction manual, but the operation is simple enough that one isn't really needed. - Model: ZD264 - Storage Capacity: 16GB - Function: One-button recording - Battery: High-capacity lithium-ion battery - Included: Earphones - Language: Multi-language support Thank you for looking.