Portable handheld device for warning falling into water

The invention discloses a portable handheld device for water falling alarm, which comprises a water falling detection module, an MOB alarm module, a sound-light alarm module, a DSC distress call module and a VHF emergency call module, and is characterized in that the water falling detection module is connected with the MOB alarm module and the sound-light alarm module; the alarm module is used for triggering the MOB alarm module and the sound-light alarm module to give an alarm after detecting that the portable handheld device falls into water; the DSC distress call module is connected with the DSC distress call key and is used for sending a distress call signal to a first preset channel after detecting that the DSC distress call key is pressed down; and the VHF emergency call module is connected with the VHF emergency call key and is used for establishing emergency lifesaving communication with a second preset channel after detecting that the VHF emergency call key is pressed down. Therefore, the portable ha