USB Multi-Functional Assembling Speaker is a 3-in-1 combo speaker. It allows you to connect 3 different USB devices at the same time. Built-in a projector clock, speaker and 3.5mm line-in. Let's you connect to all iPods, MP3, MP4, MD, CD player, notebook, PC, PDA, PSP, mobile phone and other digital products with 3.5mm stereo audio connector. Features: Used USB power or AA/AAA Battery power, driving LCD display clock and high-fidelity stereo speaker functions With switch for controlling volume and speaker function With switch for settling time and projection of time Speaker Output Power: 2W x 2 Speaker Frequency: 150Hz~20KHz Loudspeaker: 40mm x 2 Impedance: 8Ω S/N: >85db Display show month, date, hour, minute and second Directly drive a standard 3.5 digit multiplexed LCD Normal display and alternate display USB 2.0 3-Port hub Fully compliant with USB 2.0 specification Backwards compatible with USB 1.1 Dimension: 95 x 89 x 89mm (approx.) Weight: 217g Package Contents: USB Multi-Functional Assembling Speaker USB Cable Audio Cable