This alarm has been designed with three easy-to-use buttons to allow you to adjust the volume, tone and sensitivity of the alarm. The top of the receiver displays powerful LED lights that alarm you of bites, when to perform drop backs and guide you when catching your fish. As well, it is completely waterproof, so ideal to bring to the water.Operates with 2 x AAA 1,5 V batteries (Not Included)5 Volume settings and a silent mode4 Sensitivity settings7 Tone settings100% waterproofWhite PTFE rollerDedicated drop back LEDDedicated drop back toneExtending illuminated snag earsColour: Blue ReceiverOperates with 2 x AAA 1,5 V batteries (Not Included)Last bite/Memory functionSilent modeVibration modeDedicated run and drop back LEDCourtesy night light100% waterproof