18mm Mesh Stainless Steel Replacement Watch Band For Withings Activit&eacute;, Activit&eacute; Pop, Activit&eacute; Steel, Activit&eacute; Sapphire, Steel HR 36mm case with an 18mm strap (2016) (Black) Compatible Model: Withings Activit, Activit Pop, Activit Steel, Activit Sapphire, Steel HR 36mm case with an 18mm strap (2016) (NOT FOR 40MM Casing 20MM Withings Steel HR) Watch Band Width: 18mm, Lengths: 180mm (Adjustable). (Does Not Fit 40mm case which use 20mm Strap - Withings Steel HR Heart Rate Monitor/Tracker) High Quality Stainless Steel Third Party Watch Band Durable Stainless Steel With Fashionable and Elegant Design Package Includes: 1x Watch Band, 2x Spring Bars / Pins, 1x Tools, YESOO Retail Packaging