digital voice recorderRecording format: WAVEasy one-button operationBuilt-in lithium batteryHook design, easy to carry and place.Product Features:1. Good quality, metal shell, easy to carry2. Save files (date and time) in time for easy search;3. Keychain hook, easy to fix and carry4. Built-in memory 16GB5. Built-in lithium-ion battery6. Low sensitivity recording, super long recording function;7. Can play recorded files and music;8. Dimensions: 6.0 x 2.3 x 1.0 cm11. Weight: 38 g + -12. When the capacity is full, the record file will be automatically saved;13. When the battery power is insufficient, the record file will be automatically saved;14. Easy one-key operationOpen the "Close" button to start recording, close this button to save the recording