With a range of up to 150m and an exceptional battery life powered by 1 9V battery, this bite alarm set is made for a long carp session at the bank. With a dynamic V-LED array, 2 extra high visibility LEDs and an illuminated roller wheel with night glow function, the Sonik Vader X 3+1 Bite Alarm Set won't let you miss a thing.Dynamic V-LED arrayIndicates line movement2 extra high visibility LEDsIlluminated roller wheel with night glow functionAdjustable volume, tone and sensitivityRubberised and weather proofed finishSupplied with screw on snag ears2.5mm power out socketUp to 150m rangeBattery life powered by 1 x 9V batteryCompact and light weight case designReceiver has up to 6 channels with volume and vibration options