OBS-BUOY400 Wave Buoy is the most affordable, lightweight, and reliable metocean buoy that collects and transmits accurate real-time full wave and sea surface temperature data. Superior elliptical design for accurate wave tracking, and temperature measurements in all types of challenging conditions. Long lasting Easy-to-Replace lithium batteries and Easy-to-deploy wave buoy, complete with accurate real time wave and sea surface temperature measurements. Designed specifically for coastal and offshore deployments for the most affordable, convenient and easiest wave and temperature measurement buoy. Simply powerup, place in the water and log into your Data Portal.