Product Description Features: 1) USB 2.0 version with capacity of 128MB / 256MB / 512MB / 1GB / 2GB 2) Super size 1.5" OLED colorful display 3) Supports multi-formats: MP3, WMA 4) High quality MIC record / A-B repeat / MP4 player / cancel pre-file / shock proof, static proof, and waterproof / USB flash / line-in record / 5-equalizer modes 5) Bite rate: 32 - 256Kbps 6) Temperature: -20 ~ +70癈 7) Output frequency rate: 20Hz - 20kHz 8) Earphone output: 5MW + 5MW 9) Port: USB 2.0 10) Operating platform: Windows 98 / 2000 / XP / Me / NT Mac OS 8.6 or higher 11) Electronic file storable and readable 12) Battery pressure: 3.7V 13) Charge pressure: 5.1V 14) Lithium rechargeable battery lasts up to 8 hours 15) G.W.: 500g 16) Dimensions (L x W x H): 120 x 100 x 120mm