xBAND works with the MOB+ xHUB and xFOB (both required and sold separately) as part of the MOB+ Wireless Engine Cutoff Switch system.The MOB+ xBAND is a highly durable marine-grade silicone wristband. This enables you to use the xFOB at your wrist, so it's always on and never intrusive. The xFOB fits perfectly inside the wristband.Key FeaturesChoose your favorite colorxFOB fits inside the wristbandComfortable fit and adjustable sizeUnique and patented locking mechanismHighly durable silicone rubberSize: wristband wrap from 5.3" to 8.5" (circumference)Weight: 0.35 oz. / 10 g