[Mini USB Voice Recorder] Compact USB voice recorder designed for portability, easily fitting in your pocket, wallet, or backpack. Features a lanyard hole for attachment to keychains or bags. Ideal for recording lectures, meetings, interviews, classes, and speeches. [16GB Mini Voice Recorder] Built-in 16GB internal memory with 128Kbps recording resolution, supports up to 288 hours of o recording. Equipped with a built-in rechargeable 150mAh lithium battery, providing 6-8 hours of continuous recording after a 2-hour charge. No indicator lights or sounds during recording for discreet operation. [Dual USB Connector] Features dual USB connectors with both standard USB 2.0 and micro-USB plug. Play MP3 o files directly on Windows/PC or Android devices (OTG) without additional software or cables. Connects to any USB port on computers, USB power strips, wall chargers, or car chargers. [Flash Drive Voice Recorder] 2-in-1 design functions as both a voice recorder and a USB flash drive. Stores o recordings and other files or documents. Easily access and play recorded files by plugging directly into a Windows/PC or Android phone (OTG). Memory: 16GB USB: 2.0 High Speed Supported File Formats: MP3 Recording Quality: 128Kbps (up to 15 feet) Battery: Built-in 150mAh lithium polymer rechargeable battery System Compatibility: Windows 2000/XP/7/10; Android (OTG support) Dimensions: 70 x 21 x 9.4mm Material: Plastic Color: Black Package Contents: 1 x Voice Recorder 1 x User Manual Note: Lighting and display settings may cause slight color variations between the product image and actual item. Measurement may vary by +/- 1-3cm.