SRD:Torc of Free Will

Torc of Free Will: This item is a band inlaid with precious metal, worn around the neck or upper arm. The wearer of a torc of free will is not affected by the brain lock power or items that produce brain lock effects (such as crystal anchors).

A torc is treated as an amulet for the purpose of determining which items can be worn on the body.

Faint telepathy; ML 3rd; Craft Universal Item, brain lock; Price 6,000 gp; Weight 2 lb.