Surya yantra to get blessings from Sun planet for good health, power, authority, overcoming difficulties. It also pacifies the malefics of Sun planet in a person's birth chart. 

Surya is the chief, the solar deity, one of the Adityas, son of Kasyapa and one of his wives Aditi. He has hair and arms of gold. His chariot is pulled by seven horses, which represent the seven chakras. He presides as "Ravi" over "Ravi-var" or Sunday.
In Hindu religious literature, Surya is notably mentioned as the visible form of God that one can see every day. Furthermore, Shaivites and Vaishnavas often regard Surya as an aspect of Shiva and Vishnu, respectively. The Sun is called Surya Narayana by Vaishnavas. In Shaivites, Surya is said to be one of eight forms of Shiva, named the Astamurti. He is said to be of Sattva Guna and represents the Soul, the King, highly placed persons or fathers. Invoking Gayatri Mantra or Aditya Hrudaya Mantra (Adityahridayam) are known to please the Sun God.

Locket Details: Locket made in pure silver with Surya Yantra on one side and Surya deity photo on other side. The locket would be strung in red thread.
 
Mantra: Om GrrNi Suryay Namah 
Dimensions: 24 mm (H) x 24 mm (W) x 1.5 mm (Thickness)
Weight: 5 grams