Long battery life voice recorder - Large capacity 3200mAh rechargeable battery. The battery can support 20 days of continuous recording when fully charged,365 days standby. It is great for conference,lecture, investigation, evidence collection.Strong magnetic voice activated recorder- Strong magnetic absorption can be attached to anywhere, under bed, office desk, car seat, making the recording easily and secretly; Noise can be reduced by irritation; the recording sound is 40% clearer than normal digital voice recorder.Simply the best : Easy to use, just push the switch to "on" to start recording and "off" to save (refer to Amazon Picture No. 3)How to set "Voice Activated Mode" : Move switch to on position then press "-"button until the red indicator light goes off. (when you see the red led, please press the "-" quickly in case the red led go off automatically) It will start recording when sound is detected and you can record in a way to avoid long hours of silent recordingsHow to set 64 kbps: factory default 192 kbps, one can set it to 64kbps, 16g can save about 450 h in 64kbps. How to set: Switch to ON, and press"+" until the red light off, and the recording is in 64kbps now.There are time tool and some songs which were put in the device. That is factory setting . And it is a total brand new items.