One touch record USB & MP3 function; Voice-activated Function(VOR); ecording & teleRecording; Timer record and Check balance time; Recording Time(4GB): HP:68hrs-MP3 ,LP:1080hrs-MP3; Screen: Segment display Material:ABS plastic Rechargeable 180mah Lithium battery amp; telerecording Recording duration after full recharge: HP:9hrs-MP3 ,LP: 15hrs-MP3; One sensitive microRecord format:MP3 Memory:flash memory inside up to 16GB Weight:24.5g