The Mini Micron from FOX is a modern, further developed version of the classic old-school Mini Micron bite alarm with many new functions. Knob for four volume settings. Knob for four pitch settings. Button for two sensitivity settings. Two 5mm High Vis LEDs in the earpieces for maximum visibility. LED brightness is adjustable. LEDs are set by pressing the volume knob and then pressing the pitch knob. D-Tec Sensing System/Roller Wheel technology for clean and reliable bite registration. Power out 2.5mm output for use with a sounder box and also illuminated wakers, such as the Fox Illuminated Swinger®. Piezo Speaker for clear sound. Rubber inlays for rod protection and good grip on hard bites. On/Off toggle switch. Profiled adjusting ring. Operates on small N Type/LR1 batteries. Top tip: Use the Mini Micron in combination with a hanger, watcher or winger for the best bite registration.