This is the device that automatically ties a fishing knot in 30 seconds. Ideal for fisherman with eyesight and manual dexterity challenges, it is compact and nimble for use on a boat. It can be used with up to 12-lb. test monofilament or fluoropolymer fishing line or up to 50-lb. test braid, welding a line’s knot with a smooth molded-in-place polymer sleeve that exceeds line strength and eliminates weed pickup and providing a loop size that provides freedom of movement for a hook or lure. Includes one welding cartridge that provide 12 knots. Operates best between 55° F and 90° F and after wiping line with the 24 included  alcohol pads. Its rechargeable battery provides up to 150 tied lines from a charge using the included 12" micro USB cable. 6 1/2" H x 2" W. (9 oz.)