... & waterproof 4. meets CE, RoHS, NF, ASTM Child Tracker Introduction: This child tracker is a safety electronic device for protectiing children ... artworkSpecial Feature:Increasing anti drowning detectionQuality Control: 100% tested before shipping Product Usage:Swimming pools, child, the old, garden, park, boat, ... .23) Whole product is small and light, save freight. Radio Frequency Child Tracker