Compatible with iPhone 15 and higher devices via the included OTG adapter, compatible with Android phones via the included OTG adapter. You can also enjoy clear recordings through the voice recorder device using earphones or a compute!<br>LOW POWER-AUTO SAVE: This digital voice recorder supports automatically save recording when low power or power off, will avoid any important loss . And during recording, the voice recorder is silent, no sound and light. Also support Long distance recording!<br>【LARGE CAPACITY】 This voice activated recorder supports 128GB of memory which is insert in the device can store 1536H recording file at 192KBPS. And the built-in high-capacity battery can support 240 hours of continuous recording or 160 hours of headphone continuous playback. Because of the large memory, the computer recognition is relatively slow, please wait patiently.<br>【Quick Recording】The voice recorder supports quickly one-key recording which is easy and convenient. Just push the button on to recording, push to OFF to save the recording. Voice Recorder Dimension: (7.4x2.9x1.7)cm.<br>【Voice activated recording】The Voice activated recorder supports Voice-activated Recording(VAR) Mode and Normal Mode. Please set up VAR mode on your PC if you need. VAR mode will record when with sound and stop record when no sound! This helps optimize storage card usage by avoiding unnecessary recording segments.