Free Shipping!! Includes current certification. We are proud to offer our Certified 300 kg (660 LB.) digital hanging scale to speros that want to record their catch and apply for a spearfishing world record. You no longer have to buy a bulky $600 scale to submit your catch. Our new scales are light weight and compact in size (3 x 7 inches) and come certified for officially weighing your catch. Scales run on two AAA batteries (Not included).