Measure the precise position: the lock is very strong, convenient to measure the precise position of the fish, the flexible function on board is used for trolling, jigging Excellent performance: the fishing line counter is fully functional and completely user friendly. The fishing line counter is easier to weigh and flexible to use. For buyers using micro plumb lines, we recommend adding a plumb line to make the line easier to use. Two-way measurement: The mechanical fishing line can realize the function of measuring the two-way fishing line length. Easy Installation: Only fits the above line on the fishing rod, as the counter is only placed on the top of the fishing rod. If you have any installation problems, you can contact our customer service EASY TO USE: The fishing line counter is easy to use and counts accurately. The longest record is 999 meters, even if you are sea fishing, it can meet your needs Dimensions: Length : 6cm; Width : 5cm