Anti-drowning tech detects when swimmers are in danger | Crave - CNET: "According to the Center for Disease Control's most recent statistics, there are about 10 fatal drownings per day. Children age 1 through 4 have the highest drowning rates."
"The SEAL system consists of a necklace-type device and a monitoring hub. A swimmer wears the neck band and goes underwater. The lifeguard or parent also wears a band. After a certain amount of time without surfacing, visual and audio alarms signal on the necklace, the hub, and the lifeguard's band."
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