Digital Fishing Line Counter Clip-on Gauge Fishing Line Spooler 999FT LED Screen 10 Groups Data Fishing Line Depth Finder Counter for Spooling Trolling Jigging 180 Degree 2-Way Adjustable Can switch between Feet/Meter. Maximum counting length is 999.99m(or ft) each group, minimum digit 0.1m(ft). IMPORTANT: Please Email us for custmer support if you encounter any problem while using this product.Memory Mode Available. Can store up to 10 groups of individual counting data. So if expecting counting length is longer than 999.99m(or ft), you can split up the whole length into serval sections and store in different groups, then sum all groups' datas up. Means counting maximum length 9999.9m(ft) technically.180 degree Rotating. Work for rods with trigger handle(casting rod) and spinning handle(spinning cods), even flexible functionality on boat for trolling, jigging, deep dropping.Heavy duty ABS side plate; strong clip-on clamp with soft rubber inner; smooth line wheel. (Tips: double wrapped around the wheel to reduce slippage and increase accuracy.)Electronic model LED screen. Supported by one 2032 Button Battery (BATTERY NOT INCLUDED). Please mail to ask for an ENGLISH INSTRUCTION if it is needed.