Features:1. Digital voice recorder and music player with high quality sound.2. One-touch recording, high efficiency for class, interviews, meetings, lectures, etc.3. High grade built-in microphone, allows you to record detailed conversations.4. Memory supports 8GB/ 16GB/ 32GB5. Small body, easy to carry and hide.Technical parameters:Color: BlackMaterial: MetalRecording Format: WAVMusic Format: WAVPlayback Formats: WAV, MP3Power Supply: Li-ion batteryBattery capacity: 3.7V 400mAhUSB Port: USB 2.0Frequency Response: 20Hz-20KHzWorking Temperature: 0~40With Speakers: YesBalanced Out: YesCapacity: No capacity (supports 8GB/ 16GB/ 32GB TF Card)Compatible System: Windows XP, Window Vista, Windows 7, Windows 8Item Size: 7 * 1.8 * 1.1cm/ 2.7 * 0.7 * 0.4inItem Weight: 34g/ 1.2oz.