Measurement Grip YQ-850-Operated with Lithium battery CR2032 x 2pcs.Batteries included.Displaying weight on the LCD panel!Connecting weight data with measurement application via Bluetooth!Can display weight of fish caught in kg or lb on the LCD panel.Can indicate weight and size on photos of fish caught using the free Hapyson measurement application.Accessories : Curl cord strap x 1pc,Carabiner x 1pc.Max. Measurement Size : Up to 1m.Max. Measurement Weight : Up to 20kg