Sleek appearance design and comfortable touch Support multiple audio format, such as MP1, MP2, MP3,WAV No need USB driver Supports MP3, WMA, , and WAV music formats.Long time voice recording. Playback Formats : mp3 Playback Formats : WAV Record Audio Format : WAV External Memory : No With Speakers : No Balanced Out : No Model Number : GX-R01 External Microphone : No Dimensions (WxHxD) : 1.85x0.7x0.24inch Voice Activated Recording : Yes Record bit rate : 192kbps Mp3 Player : Support Built-in microphone Music playing function Recording indicatio Battery low power indication Working temperature: 0-40C Record bit rate :192 kbps Built in battery: 100mah( 12hours battery life ) Memory: 16GB Colour:black Material:Aluminum Alloy Package Contents: 1 * Recording Device 1 * Data Cable 1 * Headphone Cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.