Model N16 Quantity 1 Color Black + silver Material ABS Internal Storage 8 GB Memory Card Type No (Not supported) Recording Time 90 Hour Record Audio Format WAV Audio Formats WAV Built-in Speaker No PC Interface USB 2.0 Battery Lithium 120mAh Other Features With black ink ball pen; OS supported: Windows2000 / XP / Vista / 7 (Must select FAT32 file system format) Packing List 1 x Voice recorder 1 x Earphone (95cm) 1 x USB cable (33cm) 2 x Black ink pen refills 1 x Chinese user manual 1 x English user manual 1 x 2-flat-pin plug power adapter (110~240V)