Perfect for on-the-go security. Programmable electronic lock with override key. Automatic delay after multiple incorrect attempts. Steel tethering cable provides added theft deterrence. Steel construction. Requires 4 AA batteries. 0.5 cu. ft. Int.: 16.4 x 11.3 x 3.6 in. H. Ext.:17.5 x 13.6 x 5.8 in. H. Black.