Wireless ZigbeeA(R) GPS/Tracking Antenna for Zigboat(TM) SystemThe only wireless ZigBeeA(R) GPS in the market. Tracks boat location and movement and sends you push notifications when the boat is out of the set geofence area without subscriptions, neither monthly fees, neither cloud. It includes many essential features for monitoring your boat and for your peace of mind, such as: Geofencing, Anchor watch alarm, Fleet tracking and Weather forecasts.WARNING: This product can expose you to chemicals including LEAD which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.