Q31P 0.42-inch Screen Pin-style Voice Recorder 1. Portable voice recorder, crafted with 6.6mm ultra-thin integrated aluminum alloy body, weighs only 17.2g for weight-free wearing; equipped with pin back clip to firmly attach on collars for easy carry. 2. Built-in HD OLED screen, real-time display of remaining battery, recording duration, file number and playback status, all data visible at a glance. 3. One-click simple recording: instantly record after power on and auto-save audio when power off, files named by timestamp for easy sorting, easy to operate even without visual check. 4. Adopts DSP noise reduction chip with AI digital noise reduction and omnidirectional high-definition sound pickup, automatically filters air conditioning wind noise, traffic and crowd murmurs to capture clear human voice in noisy surroundings. 5. Voice-activated recording mode: auto starts recording when sound is detected and auto pauses during silence, no frequent manual operation and saves storage space. 6. 400mAh lithium polymer battery, supports 65 hours continuous recording and 40 hours audio playback after full charge; only takes 2 hours for full charging, eliminating battery anxiety. 7. Type-C plug-and-play design, no driver required, directly connect to computer to transfer recording files rapidly. 8. Compatible with earphones to switch to MP3 music playback, dual functions of recording and music playing; built-in file password encryption function to protect the privacy of your recordings. 9. Suitable for all scenarios: classroom recording for students, office meeting minutes, outdoor journalist interviews and instant inspiration recording, covering all daily recording demands. 10. Screen: 0.42-inch OLED 11. Recording format: WAV 12. Adjustable bitrate: 192-1536 kbps 13. Mobile connectivity: Direct connection to Android phones; connection to iOS phones via OTG adapter 14. Material: Aluminum alloy 15. Dimensions: 6.6 x 27 x 72 mm