GERi™ / KERi™ Hearing Aid by Nasco Healthcare $29.95 LF04090 GERi™ / KERi™ Hearing Aid / LF04090 / Cart Title GERi™ / KERi™ Hearing Aid Product ID LF04090 CheckoutType Cart Add to cart Learn how to assist and place a hearing device in the ear with the GERi™/KERi™ Manikin Hearing Aid.