Innovation and reliability in one tool! The special feature of the Carp Expert Bite Indicator is that it has a built-in buzzer with sound! We don't need a separate electric beam marker any more! Practical 2 in 1 solution. Due to its size, it is perfectly suited for boilie or traditional fishing rods, but it will also be a big favorite on predatory fishing, where the minimal equipment is supported by this 2 in 1 solution! We recommend the fishing spool for those who, besides classical quality, are happy to try out products with innovative solutions.