NB1420 MINI SPEAKER SYSTEMS Drive unit: 2" x2 (magnetically shielded) Portable multimedia speaker system, perfect for Notebooks Two high quality micro-drivers delivering powerful sound with amazing clarity 3.5mm line input, connects to all types of portable PC,MP3 player, etc. USB , AC/DC Dual power supply

Technical Specifications Speaker type 2" x 2 Frequency Response 80Hz-17KHz Speaker Impedance 8Ω Power Supply USB , AC/DC Dual power supply Dimensions 62×142×35mm ( W×H×D)