Material : ABS plastic case- Feature : 3 in 1 function of MP3, USB storage drive & voice recorder USB v1.1Compatible with Windows 98SE / ME / 2000 and XP & MAC OS 9.1 or above Display Song Name & Lyrics with EL Backlight Support Multi- Language : Eng / German / French / Italian / Spanish /Swedish / Czech / Simple Chinese and Traditional ChineseSupport format : MP3/ WMA / WMV7 mode equalizer (Natural/Rock/Pop/Classic/Soft/Jazz/DBB)- Unit Size : 100 x 31 x 32 mm- Product Colour : Silver - Imprint Size : 10 mm dia.- Battery Type : 1 x AAA size battery- Battery life : 6~8 hours base on Alkaline price below are for 128 MB Also Available in 256 MB, 512 MB, please call sales assistant for details Pricing includes 1 color one location screen printing.