Bicycle headlights and bicycle speakers Bicycle LED headlights have 3 lighting modes: strong light / weak light / flash. The built-in 130 dp bike bell is loud enough to remind you. It has 5 sound modes. Press for 4 seconds to switch. Battery indicator: The cell phone holder for bicycle with battery can charge cell phones and other USB devices. In addition to the bike light switch, there is also a 4-segment power display that allows you to easily check the remaining power. Understand and ensure timely charges. Mobile Energy: This front bike light has a built-in rechargeable lithium battery that can run for 8 to 12 hours. It can be charged from your computer or any device with a USB port. The bicycle cell phone base has a power bank that you can use to charge your cell phone.(Reminder: It is best to fully charge the bike phone holder before charging the phone) Super stability and safety phone holder The bike phone holder has 3 support brackets including 2 elastic clips that are suitable for 4-6.5 inch cell phones. Your phone is still firmly attached to the handlebars of the bicycle. Simple and convenient installation Bicycle headlights are easy to install and use no tools, so the bicycle phone holder can be easily installed and is suitable for most vehicles Suitable, It can be a birthday present or a festival present in the New Year mobile phone holder power bank bike, Christmas bike power bank holder. Give your family, your friends, and enjoy the fun of sports together mobile phone holder powerbank bicycle Not only LED bicycle lights, but also mobile charging station mobile phone holder sport bicycle headlights The high horn is very loud. You can change the mode in 5 sound modes by long pressing the bell switch. This bicycle phone mount bracket fits most vehicle drivers such as motorcycle / MTB / mountain bike / e-bike / folding bike / scooter etc.