External Memory : Yes With Speakers : Yes   Record Audio Format : WAV Playback Formats : WAV External Microphone : Yes Package : No Balanced Out : Yes Voice Activated Recording : Yes Dimensions (WxHxD) : - Model Number : SK-007 Digital Voice Recorder      Features   :        Digital voice recorder and music player with high quality sound.        One-touch recording, high efficiency for class, interviews, meetings, lectures, etc.        High grade built-in microphone, allows you to record detailed conversations.        Built-in rechargeable lithium battery, offers up to 20hrs continuous recording (fully charged).        Supports 8GB/ 16GB/ 32GB memory card (not included).        Small body, easy to carry and hide.           Specifications:        Recording Format: WAV        Music Format: WAV        Playback Formats: WAV, MP3        Power Supply: Li-ion battery        Recording Time: 20 hours (fully charged)        USB Port: USB 2.0        Frequency Response: 20Hz-20KHz        Working Temperature: 0~40℃        With Speakers: Yes        Balanced Out: Yes        Capacity: No capacity (supports 8GB/ 16GB/ 32GB TF Card)        Compatible System: Windows XP, Window Vista, Windows 7, Windows 8           Note:        This digital voice recorder needs to work with a memory card (not included). Supports 8GB/ 16GB/ 32GB TF card.           Package:        1 * Voice Recorder        1 * Earphone        1 * Charging Cable