Shield talisman
Sith shield talismans, which can be found in [Legends](link url) material, were [magical](link url) [objects](link url) that defended those who wore them against all types of energy attacks, even [Force](link url)-related attacks. These protective charms, usually made as necklaces, functioned by taking in the energy aimed at them and saving it to be used as a power source. To function correctly, shield talismans needed to be charged with energy at a minimum of once per week.
Sources
- Tales of the Jedi Companion