4 Mukhi Rudraksha

4 Mukhi Rudraksha is Brahma. One who wears it becomes knowledgeable of all Vedas and all other Shastras. (Padma Purana Chapter. 57, Shloka. 48 )
The 4 Mukhi Rudraksha is a bead that is said to have many benefits, including:

Help it with your concentration and focus, which can be beneficial for students and professionals.
Strengthen memory power.
Help increase knowledge and wisdom.
Help to increase creativity.
Help to increase self-confidence.
Help improve your sense of humor.
Help to improve vocal power.
Help to improve optimism.
The 4 Mukhi Rudraksha is said to help achieve a balanced mind.