Recorder Big Louder External Speaker Outdoors Hq MP4 Video Bluetooth FM Portable Music Kosher MP3 Player. Dual Function Design: Combines recording and writing capabilities in a single pen device. Durable Metal Construction: Made of all-metal stainless steel and high-grade zinc alloy for durability. Voice Activated Recording: Features VOR technology with independent button for auto-recording upon voice detection. Large Storage Capacity: Optional 32GB or 64GB memory with support for SD cards. Multi-Format Support: Supports WAV, MP3, and WMA audio formats with high sampling precision. Long Battery Life: Built-in 3.7V 80mAh battery offers 7-10 hours of continuous recording. Digital Noise Reduction: Uses professional DSP chip and digital noise reduction technology for clear audio. Time Stamp Function: Allows setting recording time for organized file management.