The utility model discloses an electronic alarm with a
USB interface, and relates to the technical field of chemical or physical analysis. The
wireless charging device comprises a shell, a connecting piece is fixedly connected to the surface of the shell, a
loudspeaker is fixedly connected to the surface of the connecting piece, and a charging device with an automatic bunching function is arranged in the shell; wherein the charging device comprises a fixed shaft, the surface of the fixed shaft is fixedly connected with the interior of the shell, and a
USB interface is arranged in the charging device, so that the electronic
alarm device can carry out detection and alarm while charging through the
USB interface when the electronic
alarm device is not powered, the trouble that a battery needs to be replaced and the electronic
alarm device can be used after being charged to a certain electric quantity when the electronic alarm device is powered off is avoided; the charging wire has certain
extensibility, when the charging wire is not used, the charging wire enters the interior of the shell through the
clockwork spring to achieve the effect of hiding the charging wire, the phenomenon that the charging wire is wound and influences the use experience is avoided, and therefore the use experience of a user is improved.