Field of application The invention relates to radio electronics and more particularly, to the means orientation in space and providing information.It is preferable to use a utility model in the field of rehabilitation of people with limited functions of view, as a means of guiding and informing the visually impaired and blind people when traveling on different infrastructures (street, institution, parks, etc.).The general issue of the exploitation of orientation and information systems is that the mobile device of said system is powered by a power source - battery. Said battery depending on the capacity is designed for a different time. Because battery life is limited, there may be situations in which its full discharge occurs earlier than the user can be charged again, in this connection, the operation of the apparatus is stopped and the user is unable to operate as the mobile device and the system as a whole .The prior art discloses a device for the orientation of the blind, taken as an analog to the claimed utility model (Patent of Russian Federation №43161 h. 23.09.2004, at op. 10.01.2005 g).Known communicative system for information and orientation Blind (Russian Federation Patent №97918 of. 29.03.2010, op. 27.09.2010). This system has been chosen as the prototype as the closest in its technical solution.A disadvantage of analogue and the prototype is that they lack the technical possibility of power consumption level control, a wearable battery block. For example, when voicing information by the portable unit wearable unit volume is independent of the ambient noise level. However, depending on the environment in which operation occurs wearable unit - in a noisy or a quiet environment, automatic volume control, such reduction in volume when the user in a quiet environment, allow economical use of electrical energy accumulator wearable unit.The object on which the claimed utility model is to save electric power supply unit wearable energy depending on its operat
