High-definition recording: One key to start recording, the indicator flashes three times and automatically turns off, allowing silent and light-free recording. Power -Off Save: Low power or power off conditions, the recording will be automatically saved and then closed. U-Disk function: It can store file data, music, recording files. Wired control headset: You can play records and songs through the wired control headset wired and adjust the volume. File deletion: Connect to computer or mobile phone to delete unnecessary recording files. Specifications: Product color: black Memory capacity: 8 GB Body material: ABS Original design: keychain voice recorder Recording format: WAV Recording time: 38 hours of continuous recording Standby time: 68 hours Microphone: Built-in high quality microphone Sampling rate: 48 KHZ Number of bits: 192 KBPS Battery: built-in environmentally friendly lithium battery Package included 1 x Recorder 1 x Earphone 1 x English Manual 1 x USB data cable