Life/form® GERi / KERi Blood Pressure Arm, Left - Light by Nasco Healthcare $1,584.95 Left - Light / LF04079 / Cart Title Left - Light Product ID LF04079 CheckoutType Cart Add to cart Reproduces the five Korotkoff sounds and allows the instructor to vary systolic and diastolic levels, pulse rate, volume, and auscultatory gap. For use with all GERi and KERi manikins.