Brand Name: Savetek Playback Formats: mp3 Playback Formats: WAV Record Audio Format: WAV Material: Metal Origin: Mainland China High-concerned chemical: none Form-factor: Others External Memory: No With Speakers: No Balanced Out: No Model Number: GS-R01s Package: No External Microphone: No Certification: CE Dimensions (WxHxD): 1.85*0.7*0.24inch Voice Activated Recording: Yes Color: Black Record bit rate: 64/192/512/1536kbps Mp3 Player: Support Noise Cancelling: Support Indicator: Support Timer Recorder: Support