Features: A-B repeat,fast forward, fast back. Files will be automatically saved when power off. Auto :set the start time and the end time. Using professional DSP acoustic processor, built-in intelligent noise reduction chip,abilitiy to recording content accurately and clearly. Audio recorder has metal solid case, lightweight and it is portable. Specifications: Material: Zinc alloy Color:Black Siz(LxWxH):Approx.92x35x12mm Display: Color display Display size: 1.44 inch TFT Transmission interface: USB 2.0 Microphone: Capacitive Number of microphones: Two-way Recording distance: 20 meters Battery: Built-in 360 mAh lithium battery Recording time: 25 hours Charging time: 3 hours Frequency: 20-20KHZ Memory capacity: 8GB/16GB/32GB Package included: 1pc x Voice Recorder 1pc x Data Cable 1pc x Headset 1pc x Instruction Manual