1、Abs Material And HD Screen: The digital recorder is made of ABS material. And the use of high definition screen, easy to operate at night, clearly visible. 2、Professional Voice Recorder And One Key Recording: Professional recording in MP3 format, one key recording. Condenser microphone recording, reproduce the original sound recording. 3、Intelligent Noise Reduction: Built in high end professional recording audio processing program. Intelligent noise reduction can effectively filter the noise part of the sound source. 4、Play Format And Voice Activated Recording: Supports MP3 WAV audio file playback in multiple formats. And it supports intelligent voice activated recording, which is convenient to use. 5、Auto Save: The recording function is automatically turned off, and the file is saved in low power. Effectively save storage space and reduce blank useless files. 1 x Recorder1 x Earphone1 x Data Line1 x English Manual Item Type: Digital RecorderModel: 299Material: ABSColour: BlackScreen: 28x25 Broken Code ScreenStorage: Support 4G 8G 16G 32G Memory Card Expansion (Not Included)Capacity (Memory Card) Recording Time: 4G Maximum Recording 72 Hours, 8G Maximum Recording 144 Hours, 16G Maximum Recording 288 Hours, 32G Maximum Recording 576 HoursRecording Format: MP3 FormatRecording Sampling Bit Rate: 128KbpsActual Maximum Output: (L) 10mW +(R) 10mW (32Ohm)Frequency Response: 20Hz To 20KHzExternal Input: 3.5mm Headphone Jack, MicroUSB Power JackBuilt-In Microphone: Non Directional Condenser MicrophoneS/N (Noise Ratio): ≥ 70dBDistortion: 0.05%Battery Type: Built In 270mAh Lithium BatteryFully Charged Battery Recording Time: About 10 HoursExternal Playback Time: About 5 Hours (Depending On The Size Of The Song)Headphone Playback Time: About 20 HoursSupport: For Windows98 2000 XP And Other Systems