Abstract: The present invention relates to a brain stimulation device, including: an electrode unit constituted by one or more electrodes and configured to move back and forth to a head of a user to fix the electrodes onto the head of the user; an auxiliary pressing unit configured to move back and forth to the head of the user to fix the electrodes onto the head of the user; and a donut type support unit having a donut type inner side on which the electrode unit and the auxiliary pressing unit are disposed and which surrounds the head, therefore a user can conveniently wear the brain stimulation device without a complicated manipulation for closely attaching the electrodes to his/her head.

Abstract: A wall mounting speaker assembly having a speaker unit, includes a stationary member mounted on a wall; a supporter supporting the speaker unit; a movable joint provided between the stationary member and the supporter, and combined with a vertical swiveling shaft and a horizontal tilting shaft, which make the speaker unit swivel and tilt; a lock provided on a bottom of the speaker unit; and a hook provided on the supporter to be engaged with the lock, preventing the speaker unit form moving upward. With this configuration, the present invention provides a wall mounting speaker assembly which can mount a speaker unit with a simple and convenient setup method without a screwing work, and has swiveling and tilting functions.