Check the listing for details. + BONUS! OMRON PM3030 - Compatible Electrode Connector Cable and 20 Massage Pads. Condition: New without box. Listed at 19.94 USD. OMRON HV-127 OR HV-128 - Compatible Lead Cable/Electrode Wire w/ 20 MAssage PADS + 4 Bonus Pads! Once you replace your Omron Cable with this cable, the Electrodes I sell are much more cost effective, and you will save a SIGNIFICANT AMOUNT OF MONEY using these pads instead of the Proprietary Omron Brand Pads. Note:Please be sure your model has 3.5mm jack, works with models with 3.5mm jack-will not work with PM3031 Model HERE IS A FULL LIST OF MODELS THAT THIS CABLE IS COMPATIBLE WITH(NOTE-CABLE IS COMPATIBLE W/ SUPPLIED PADS IN THIS AD ) PM3030, HV-F127, HV-F128 HV-F124, HV-F124P HV-125, HV-126, HV-F002A HV-F115 HV-F122 These are great quality pads that work with the supplied 3.5mm lead cable. These electrode pads work with this lead cable that connects to the Omron Unit.