Sony ICD-UX71. Maximum recording time: 4.83 h, Recording modes: LP, SP, ST, Frequency range: 40 - 20000 Hz. Internal memory: 1024 MB. Battery life (max): 34 h, Recording battery life: 17 h. Dimensions (WxDxH): 34.4 x 13.4 x 99 mm, Battery type: AAA, File type: mp3