The Prologic Bat Bite Alarm Blue Set is a stylish, reliable and great bite detection accuracy, the all new BAT+ bite alarm set is built to last. The internal electronic system has been tested for over one year all across Europe, facing every possible fishing and weather condition. The modern design includes a very deep rod recess which makes it possible to fish extreme situations without the use of additional snag ears. Alarms operate with AAA batteries, while the receiver operates with a 9V battery, this creates the best possible compromise between energy consumption and wireless range. The new BAT+ bite alarm set is available with blue LED (2+1, 3+1, 4+1) or traditional assorted colored LED (3+1 and 4+1). Blue set two alrams plus receiver.Five Sensitivity setting.Six Volume level plus silent mode.100 Meters range.Manual night light function.High visibility LED.Alarms operate with 2 AAA batteries (not supplied).Receiver operates with 1 9V battery (not supplied).Waterproof.