Features and Benefits: 100 000 hours of lifetime hi-intensity Light Emitting Diode (LED) "solid state bulb" 1.1 oz. / 6.6" long Blink switch and constant "on"Aluminum flashlight bodies are waterproofEach Stylus is individually numberedVersatile clip attaches to pocket or clothingOver 10 hours of runtime on 3 AAAA alkaline batteries6000 series tempered aircraft aluminum with anodized finish; non-slip knurled grip