How to replace the bracket Features 1. The most cost-effective bicycle light.it is very bright, the maximum output is about 3600 lumens, and the 6 LED lights cover a wide range, allowing you to ride at night to see wider and further areas2. Built-in 5200mAh battery (6 LED), USB output can be used as a power bank, can charge your mobile phone, 5V/1A USB Rechargable battery,3. Made of high-quality aluminum alloy casing, it has excellent impact resistance, heat diipation and corrosion resistance, not only for USB charging port, but also for the entire lamp,Safe use, even in rainy weather.4. More durable and adjustable Holder,could hold your handlebar very secured, no need worry it will fall off. Suitable for 20~36.5mm handlebars, easy to install ,no tools required.5. 3/5 Switchable mode, free to switch according to your needs.The headlight also has a flashlight function that can be used in various scenes, such as cycling, camping, night fishing, walking. Parameters of Front Light Irradiation distance: above 500 metersLED: T6Bracket: 360 degree rotation bracketCharge and discharge protection: built-in overcharge and over discharge IC. Extending battery lifeSize: 105mm (Lengh), 45mm(width), 31.8mm(height)3/5 switch Mode: Highlight / Low Light/ Mid Light / Strobe / SOSWorking voltage: 3.7VProduct color: BlackLED color temperature: 7500KProduct Material: aluminium alloySwitch type: Button Switch on lamp Super Bright 3600 Lumen 6 XML-T6 LEDs. The range reaches 300 meters. At a speed of 30 km/h. It can guarantee to illuminate 50 meters ahead. Use as a Power Bank Charge your phone and other electronic device 3/5 Mode Switchable Long pre ON/OFF button to switch 3/5 mode Input/output port USB output 5V/1AMicro input 5V/1A USB Rechargeable Used as a flashlight It can also be used as a flashlightIn the case of high-power use. The flashlight will heat up. Please do not use strong light when holding it. Avoid hot hand Power indication When it is charging. the red led light up. When it is fully charged. green led light upWhen it is turn on. The green led lights up. When it's power le than 20%. The red led light up 360 rotatable holder Fit For 20~36.5 handlebar 120 Floodlight Package list Parameter of Taillight Light Bead: COB LEDPower: Power by CR2032 Replaceable batteryDurable Time: Up to 48hrsMaterial: Aluminum alloyBattery: 2* CR2030 Button BatteryWaterproof : IPx5Weight: 40g