The near-sighted multi-functional inductor of jack formula prevention

The utility model discloses a near-sighted multi-functional inductor of jack style prevention, include: a casing, the internally mounted circuit board of casing and with the power that the circuit board is connected mutually, a distance sensor, distance sensor installs on the front end face of casing, an optical sensor, optical sensor installs on the front end face of casing, a display, a display, on the front end face of casing, a reminding device, the reminding device is installed on the said casing, also include: a book end, said book end is installed on the rear end face of casing, a plug, the plug can be installed outwards flexiblely the inside of said casing, the plug can insert in the earphone jack of mobile devices such as cell-phone, computer or iPad. Use the utility model discloses, alarm clock through distance sensor, optical sensor and inductor is set for, especially in the use of cooperation electronic product, can the multi-angle effectively prevent near-sighted emergence development.