ILLUMINATED VARI SPEED CALIBRATION FROM 215 to 450fps AMAZING UP GRADE, FROM STANDARD SCOPES THAT COME WITH CROSSBOWS. ONCE ZEROED AT 20 YARDS BY ADJUSTING THE MAGNIFICATION IT AUTOMATICALLY CALIBRATES THE RETICLE TO PROVIDE EXACT 10 YARD AIMING INCREMENTS ALL THE WAY OUT TO 100 YARDS! $75.00 FIRM! CASH OR PAYPAL SALE ONLY! NO TRADES PLEASE! AS NEW CONDITION WITH MOUNTS / RINGS/ NEW BATTERY INSTALLED. WORKS PERFECT, NO ISSUES OF ANY KIND! BUYER WILL BE MORE THAN HAPPY!