299 Digital Voice Recorder One Touch Voice Activated Recorder with Playback for Lectures Meetings Item Type: Digital Recorder Model: 299 Material: ABS Colour: Black Screen: 28x25 Broken Code Screen Storage: 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 Hours Recording Format: MP3 Format Recording Sampling Bit Rate: 128Kbps Actual Maximum Output: (L) 10mW +(R) 10mW (32Ohm) Frequency Response: 20Hz To 20KHz External Input: 3.5mm Headphone Jack, MicroUSB Power Jack Built-In Microphone: Non Directional Condenser Microphone S/N (Noise Ratio): ≥ 70dB Distortion: 0.05% Battery Type: Built In 270mAh Lithium Battery Fully Charged Battery Recording Time: About 10 Hours External Playback Time: About 5 Hours (Depending On The Size Of The Song) Headphone Playback Time: About 20 Hours Support: For Windows98 2000 XP And Other Systems