Model T-60 Quantity 1 Color Black Material Plastic Internal Storage 4 GB Recording Time 10 Hour Record Audio Format MP3 Audio Formats MP3 Built-in Speaker No PC Interface Mini USB Battery Built-in 300mAh rechargeable battery Other Features Display: 1.6" LCD; Signal to Noise Ratio: >=80dB; Earphone playing time: 12 hour; Speaker playing time: 5 hour; Support OS: Windows 98 / 2000 / ME / XP / Vista / Linux; Operating temperature: -20'C~40'C; Stereo sound performance. Packing List 1 x Voice recorder 1 x USB cable (68cm) 1 x 3.5mm earphones (95cm) 1 x Microphone (95cm) 1 x Call switch box 1 x Telephone cable (29cm) 1 x Audio-out cable (45cm) 1 x Chinese user manual 1 x English user manual