Abstract: A detachable, reusable strike alert device for signaling a strike on a fishing line includes: (a) a generally watertight main housing including a translucent, bulbous end portion; (b) a pressure adjustment switch portion opposite the bulbous end portion, the pressure adjustment switch portion including a pressure adjusting switch; (c) at least one light emitting diode in the bulbous end portion; (d) an accessible battery compartment, at least one battery in the battery compartment being in connection with the pressure adjustment switch and the light emitting diode; (e) a set of electrical contacts in the pressure adjustment switch portion; and (f) an attachment mechanism on the bulbous end portion for suspending the strike alert device above-water from a fishing support; wherein, when a fishing line extending between the contacts is moved, the light emitting diode illuminates, which signals a fish strike.