feature: 1. [Small audio recorder, fashionable and luxurious gift] The audio recorder has a compact body and a size of 74*30*18.8mm. It can be easily placed in wallets, chest pockets/MP3s, and can also be adsorbed on iron-containing items for a wider range of applications. 2. [Maximum support for 4-128GB TF expansion] and supports 4-128GB (not included) TF card memory expansion, which can accommodate a large number of recording files and music files to meet your recording needs. 3. [DSP Intelligent Noise Reduction] The latest DSP intelligent noise reduction technology can automatically reduce environmental noise by more than 90%. With our unique omnidirectional stereo microphone, it captures far/lower but clearer HD stereo sound. 4.Excellent Recording QualityDual professional dynamic noise reduction microphones with clear 1536 Kbps recording, different bitrate options, excellent recording quality and multiple audio formats. It can also be used as a portable MP3 player. 5. [Voice-activated recording, long-distance recording] Supports voice-activated recording and automatically records when sound occurs. When no sound is detected, it remains in sleep mode to save recording capacity and reduce power consumption. The recording distance is up to 60 meters. 6.Long Battery LifeBuilt-in high-quality 1600mAh rechargeable battery. When fully charged, the battery will last approximately 100 hours of recording time and approximately 96 hours of headphone playback time. It can be charged while recording and has a low-power automatic data saving function. 7. [Applicable] Ideal for classes, meetings, conferences, interviews, etc. This makes a great gift for teachers, students, lawyers, writers, and more.