Digital Audio Recorder - Universal - Professional Digital Sound Recorder with 4GB long battery life and 100m wireless recording Highlights Universal Professional Digital Sound Recorder with 4GB long battery life and 100m wireless recording 4GB 100 meters digital battery battery life professional super long wireless recording | Digital Voice Recorder One Button Recording & while playing Three recording modes: LP: long time recording SP: standard recording HP: high quality recording wireless recording 100 meters distance wireless recording Main function Super long time continuous recording One button recording and amp; while playing Three recording modes: LP: long-time recording SP: standard recording HP: high-quality recording Voice-activated recording (VOR/VAR) Time setting FM radio: Frequency 87.0-108MHz Automatic section Intelligent power control Built-in high-power speaker Built-in large capacity polymer battery Technical specifications Size: 110mm*35mm*13.5mm Weight: 57g Power supply: 3.7v 1500mAh polymer battery, super long continuous recording period Memory capacity: 4GB Recording rate: WAV, 32Kbps / 128kbps / 192kbps 8GB recording time: LP about 555 hours / SP about 138 hours / HP about 92 hours 16GB recording time: LP about 1110 hours / SP about 277 hours / HP about 185 hours Support system: Windows2000 / XP / Vista / 7/8 Music format: MP3 / WMA