Sony ICD-UX300R 4GB. Maximum recording time: 1072 h, Recording modes: ST/STSP/STLP/SP/LP. Internal memory: 4096 MB. Display: LCD. Interface: USB. Dimensions (WxDxH): 36.6 x 98.5 x 14.6 mm, Battery type: AAA, File type: mp3/WMA/AAC