Odepro ED10 Portable Mini Rotating Penlight Key Chain Black Color Flashlight Lanyard CREE XRE-Q5 Lamp Bead EDC LED Flashlight with AAA Battery(Black) Utilize CREE XM-E Q5 LED, lifespan is over 50,000 hours:Used 1*AAA Dry Battery ROTARY FIVE MODE SETTINGS - In just seconds, push the button to switch between three brightness settings (a blinding high beam,medium beam or low beam), a strobe setting or SOS setting perfect for emergencies to signal for help Lumens (brightness) and battery life:110 lumens (highlight runtime 2 hours) -50 lumens (mid-light runtime 3 hours) -10 lumens (low-light runtime 20 hours) HEAVY DUTY AND WATERPROOF - Made from impact resistant aircraft grade aluminum, this sturdy professional flash light is not just water resistant - it is fully water proof; Plus it includes a strong carrying strap to keep it on hand at critical times USE ANY SINGLE AAA BATTERY YOU WANT - Whether at home indoors, outdoors, cycling, fishing, riding, or for security reasons, with just a single AAA battery, you will have hours upon hours of light to guide your way in the dark