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 fully certified for officially weighing your catch. Scales run on two AAA batteries (Not included). They also fit nicely in our Red Tide Dry Box for all weather protection and safe travel.