this be the sweet spot of flashlight , unless you go for the more compact  Inova X1DM-HB dual High\/Low Mode lead flashlight - 1 aa battery  pro : \* throw a concentrated beam \* use aa battery -- alkaline or rechargeable -lrb- see note 1 -rrb- \* excellent specification , fully disclose -lrb- see note 2 -rrb- \* good value if you wait for low tide -lrb- under 15 buckss -rrb- \* 4 mode -lrb- bright , low , blink , SOS -rrb- \* 18 hour -lrb- or more -rrb- from a set of battery - hole for tether or strap con : - Wish it have a glass -lrb- scratch resistant -rrb- lens - warranty do not cover led burnout or lead module failure . - the twist-on , twist-off , adjust-focus-every-time design be not ideal . - - - pricing - - - price jump around , and vary by color . low tide be around 15 . there be a `` Online Price Alert '' that will email you whenever this or any amazon product dip below you target price . Google it . it be nicely do . - - - note - - - note 1 : Stick with AA battery for all you device . best deal on rechargeable , and only one size to stock up on . borrow from other device in a pinch . I never go aaa ... they be 2-1\/2 time as expensive per amp-hour of output , and in flashlight they be also less space-efficient -lrb- per amp-hour of output -rrb- . note 2 : 69 lumen -lrb- light output -rrb- - 2547 Candela -lrb- light intensity -rrb- - 18\/31 hour battery life -lrb- high\/low mode -rrb-