This is an HHA, Optimizer-lite, OL-5500. It has a green, .019 pin. It has the adjustable rheostat. This sight is like new, with some marks from moving the pin gaurd on the bracket. This sight was mounted on my wifes bow for about 40 shots, and taken off. Comes in the original package with everything that was included new. Also comes with 2 sets of Lancaster Archery yargage tapes. $100 shipped in the U.S. Paypal or money order only.