Passive Portable Speaker System means no batteries or external power source is required. Speakers Join Together for easier portability. .Bass Reflex Duct Designenhances low frequency output for powerful bass sound .Stereo Mini Plug Input allows virtually universal connectivity .Ideal for Sony Walkmanr Products .No Batteries or External Power Source Required .Good for Tabletop or PortableUse .System Full Range .Driver Units 2" (57mm) diameter cones x 2 .Impedance 6 ohms .Sensitivity 83 dB/w/m .Input Stereo mini jack; direct input .Frequency Response 250-15,000Hz .Connecting cord (1m) .L&R speakers: 9 1/3 oz (270g) .2 7/8" x 4 1/8" x 2 5/8" (72 x 105 x 65mm)
