Unlocking the Supernatural: The Seer
 

The Bible mentions a classification of prophet known as a "seer". The term was used for the wandering prophets of ancient Israel before the Davidic Kingdom. A definition I found for the "seer" follows:

SEER
From: http://www.bible-history.com/isbe/S/SEER/

se'-er, ser: The word in English Versions of the Bible represents two Hebrew words, ro'eh (1 Sam 9:9,11,18,19; 2 Sam 15:27; 1 Ch 9:22, etc.), And chozeh (2 Sam 24:11; 2 Ki 17:13; 1 Ch 21:9; 25:5; 29:29, etc.). The former designation is from the ordinary verb "to see"; the latter is connected with the verb used of prophetic vision. It appears from 1 Sam 9:9 that "seer" (ro'-eh) was the older name for those who, after the rise of the more regular orders, were called "prophets." It is not just, however, to speak of the "seers" or "prophets" of Samuel's time as on the level of mere fortune-tellers. What insight or vision they possessed is traced to God's Spirit. Samuel was the ro'-eh by pr-eeminence, and the name is little used after his time. Individuals who bear the title "seer" (chozeh) are mentioned in connection with the kings and as historiographers (2 Sam 24:11; 1 Ch 21:9; 25:5; 29:29; 2 Ch 9:29; 12:15; 19:2, etc.), and distinction is sometimes made between "prophets" and "seers" (2 Ki 17:13; 1 Ch 29:29, etc.). Havernick thinks that "seer" denotes one who does not belong to the regular prophetic order (Introductions to Old Testament, 50 ff, English translation), but it is not easy to fix a precise distinction.
See PROPHET; PROPHECY.
James Orr

There appears to be some distinction between the "prophet" and the "seer". From my understanding the "prophet" is a mouth piece for God, speaking the Word of God with a "Thus saith the LORD..." However, the "seer" not only walks in the prophetic gift, but the seer also has a "spiritual sight", wherewith he (or she) is able to "see" into the spiritual realm. They can interpret dreams, omens, signs, etc. The gift of "discernment of spirits" runs thick in the seer. The seer is known to receive symbolic spiritual "visions" or "insights" that they do not fully understand on behalf of individuals or nations and largely depend upon divine revelation regarding their interpretation. The "seer" is perhaps a "prophet" who is not attached to the regular prophetic order, or the professional ministry. Seers are often recluses and must be sought out for their spiritual insight. Having spiritual eyes to see, the seer is often misunderstood because they do not see things the way most might see them. Kings and public officials in ancient Israel would often seek out or hire a seer to serve in their royal courts. The seer is God's answer to hell's "psychics" and "fortune-tellers".

God promised such giftings with regards to the baptism of the Holy Ghost...

Joel 2:28 (ESV)
[ The Lord Will Pour Out His Spirit ] “And it shall come to pass afterward, that I will pour out my Spirit on all flesh; your sons and your daughters shall prophesy, your old men shall dream dreams, and your young men shall see visions.

This prophecy reveals that a day would come wherein this gift would be open for any who might seek it, thereby fulfilling the desire of Moses with regards to God's children walking in the prophetic...

Numbers 11:29 (ESV)
But Moses said to him, “Are you jealous for my sake? Would that all the Lord's people were prophets, that the Lord would put his Spirit on them!”