Check the listing for details. HHA - Optimizer LIte X - 5510 w/.010 Rheostat Scope (1 5/8"Dia.). Condition: New. Listed at 174.93 USD. HHA - Optimizer LIte X - 5510 w/.010 Rheostat Scope (1 5/8"Dia.) The Optimizer Lite X continues to be one of the top-selling single pin sights of all time, nearly 25 year years after its introduction. A top choice for hunters and 3D shooters alike, the Optimizer Lite was the first site in the HHA product line to feature our patented R.D.S. Sight Tape Technology. Accepting a full line of accessories including magnified lenses, sun shades and lights, archers can’t go wrong when choosing the iconic sight for all their needs.Product Features:NEW Infinite adjust slotted side bracket20-80 yard accuracy and smooth lever actionWater resistant tapesLeveling bubbleMachined aluminum pin carrierOptional mechanical rheostat to adjust pin brightnessBlue Burst light compatibleLens Kit compatible