Package Contents:5 x Q5 LED BICYCLE HEADLIGHT (ONLY)Features:Model of LED: Q5 LEDInternal wiring applies the high efficient booster circuit， working voltage is wide and can utilize the batteries in the largest extent. Switch Modes: ON / OFF /Zoom In & Zoom OutWith telescopic head to adjust the focusAdjust the length of the torch to zoom in and outSpecification:Length: 9.8cm (zoom out)， 9.2cm (zoom in)Diameter: 2.4cmWorking voltage: 3.6V - 4.2VBody material: aluminum alloyWeight: approx. 73g (Not includes the battery)Powered by 1x AA/14500 battery (Not included)