1. Recording time: about 18 hours when fully charged (depending on the environment) 2. Battery: Built-in 110MA-3.7V rechargeable lithium battery 3. Charging time: about 2 hours (red light on, blue light on when charging) 4. Recording file format: WAV 5. Recording and recording sampling speed: 48KHZ 6. Bit rate: 192KBPS 7. Size: 65x20x8MM 8. Weight: 14g Instructions: 1. Use as a USB flash drive when turned off and as a recording pen when turned on 2. Lower the button. After the red light turns on, it blinks a few times to start recording. It doesn't turn on while recording. 3. To end recording, turn the switch up, the red light flashes once, recording stops and saves 4. When the computer is off, connect to the computer's USB port and click the file to play, save, delete, etc. 5. The unit has a time synchronization function, and the recording file property is displayed as the current recording time. product manual: 1. Charging: When the USB pen recorder is connected to the computer's USB port when it is turned off, the red light is on, the blue light is on, and charging is completed 2. The recording file will be automatically saved when there is no power during recording to ensure data storage 3. If the memory is full, you can no longer record. The recorder will save the file automatically. Clear memory in time. So as not to affect usage 4. Start recording after turning it on for 10 seconds. Turn on recording after 10 seconds when recording ends, because the machine's main controller needs a few seconds to operate. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-DIMEANI official store