ITEM NAME:20x 4x4x3mm Micro Waterproof Copper Tactile Tact Touch Push Button Switch LJ 20x 4x4x3mm Micro Waterproof Copper Tactile Tact Touch Push Button Switch LJ a.imagelink a:hover.imagelink {color:#60000;.20 Touch Push Button Switch 4x4x3mm. Switch Size : 4 x 4 x 3mm (W L H). Used in the fields of electronic products, household or office. Mounting Type : SMD.