Check the listing for details. 15x11mm Sugar Cube Speaker For DCC Sound Decoder 8 Ohm 1 Watt Max (11mmx15mm). Condition: New. Listed at 4.00 USD. This speaker has solder pads to make it easier for your installs. Keep in mind these are 8ohm, 1W max speakers. If you are installing these on model trains, please look at your decoders amplifier output specs. These can be wired in series (16ohm, 2W max) or in parallel (4ohm, 2W max). These speakers are higher quality than most selling on ebay as they are IP67 compliant, better frequency response and harmonic distortion. IP67 means the speaker can be dropped into a body of water up to a 1.0m deep for half an hour. Also resistant to dust. Please see images for more details and specs. The more you buy, the more you save! DOES NOT COME WITH BAFFLE/HOUSING. I do sell it separately! Product Attributes TYPE DESCRIPTION Mfr CUI Devices Series CMS Package Tray Part Status Active Technology Magnetic Type General Purpose Frequency - Self Resonant 550Hz Efficiency - dBA 91 Efficiency - Testing 700mW/100mm Efficiency - Type Sound Pressure Level (SPL) Port Location Top Shape Rectangular Material - Cone Polyester, Polyethylene Terephthalate (PET) Material - Magnet Nd-Fe-B Ingress Protection IP67 - Dust Tight, Waterproof Termination Solder Pads Size / Dimension 0.591" L x 0.433" W (15.00mm x 11.00mm) Height - Seated (Max) 0.138" (3.50mm) Impedance 8 Ohms Power - Rated 700mW Power - Max 1W Frequency Range 100Hz ~ 20kHz