Telescopic zoom function allows you to adjust the lighting range for safer cycling. Large capacity battery ensures a long discharging time.Power bank function allows you to charge for phone or other electronics. Waterproof design makes it not easy to damage by rain to extend service life.Made of premium aluminium alloy material, it is durable. It will not dazzle eyes for safer cycling.The length of the product is 13cm, the extensible length is up to 14.1cm.It is suitable for MTB and road bike. Multifunction stopwatch bracket design makes it compatible for various stopwatch.Item Name: Stopwatch Bracket HeadlightsMaterial: Aluminum AlloyBrightness: 350lmCharging Time: 3hCharging Mode: USBDischarging Time: 3-5hBattery: 1500mAh (Included)Features: Waterproof, Super Bright, LightweightModes: Strong Light/Low Light, Flashing (Zoom Available)Size Details: Length: 13cm/5.12" (Approx.)Extensible Length: Up To 14.1cm/5.55" (Approx.)Notes:Due to the light and screen setting difference, the item's color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 x Headlight3 x Base1 x Stopwatch Bracket1 x Camera Base1 x Headlight Bracket1 x Fix Rubber Ring1 x Headlight Screw1 x Large Wrench1 x Medium Wrench1 x Small Wrench1 x Headlight Gasket2 x Bracket Tubes2 x Bracket Screws2 x Bracket Gaskets6 x Base Screws1 x USB Cable