An anti-theft device for securing an article of merchandise, comprising: a pedestal affixed to a support surface; a tray configured to support the article of merchandise thereon; a plurality of arms (16, 18) configured to immobilize the article of merchandise relative to the tray, wherein at least a first arm of the plurality of arms is movable relative to the tray; characterized in that: the first arm has a closed position in which the first arm intersects a plane of the tray such that the plurality of arms immobilizes the article of merchandise relative to the tray, and the first arm has an open position in which the first arm does not intersect the plane of the tray such that the article of merchandise can be removed from the tray; the anti-theft device further comprises a locking block movingly disposed within the pedestal, wherein the locking block has a first position relative to the pedestal in which the locking block immobilizes the first arm in the closed position, and wherein the locking block has a second position relative to the pedestal in which the locking block releases the first arm, enabling the first arm to transition into the open position, wherein the locking block is configured to transition the first arm from the open position into the closed position as the locking block moves within the pedestal from the second position into the first position; and the anti-theft device further comprises a motor operably connected to the locking block, wherein actuation of the motor selectively moves the locking block between the first position and the second position, thereby selectively closing the first arm to immobilize the article of merchandise relative to the tray or opening the first arm to enable removal of the article of merchandise from the tray. a pedestal affixed to a support surface; a tray configured to support the article of merchandise thereon; a plurality of arms (16, 18) configured to immobilize the article of merchandise relative to the tray, wherein at least a first arm of the plurality of arms is movable relative to the tray; the first arm has a closed position in which the first arm intersects a plane of the tray such that the plurality of arms immobilizes the article of merchandise relative to the tray, and the first arm has an open position in which the first arm does not intersect the plane of the tray such that the article of merchandise can be removed from the tray; the anti-theft device further comprises a locking block movingly disposed within the pedestal, wherein the locking block has a first position relative to the pedestal in which the locking block immobilizes the first arm in the closed position, and wherein the locking block has a second position relative to the pedestal in which the locking block releases the first arm, enabling the first arm to transition into the open position, wherein the locking block is configured to transition the first arm from the open position into the closed position as the locking block moves within the pedestal from the second position into the first position; and the anti-theft device further comprises a motor operably connected to the locking block, wherein actuation of the motor selectively moves the locking block between the first position and the second position, thereby selectively closing the first arm to immobilize the article of merchandise relative to the tray or opening the first arm to enable removal of the article of merchandise from the tray.