DAYTIME VISABLE TECHNOLOGY-Did you know that 75 percent of cycling accidents happen in daytime.This taillight keeps you visable not only at night but also in the daytime.Keeping you and your loved ones safe all the time.ULTRA-BRIGHT TO KEEP YOU SAFE-240 degree wide angle visual design provides more visibility than any lights on the market.Whether youre running,walking with your dog,cycling,skateboarding or hiking,these safety lights will keep you safe and secure.IPX4 WATER RESISTANT-Highly airtight constuction,stronger waterproof.These tail lights are water resistant for any weather,extremely durable.USB RECHARGEABLE-This taillight can be charged by USB cable via computers,chargers or portable power bank.This will save you lots of money on batteries.EASY TO USE-Hook onto your belt,running gear,reflective vest,backpack,dog collars,harnesses,or anywhere on your clothing.Mount to your bicycle,helmet,skateboard,scooter,stroller, wheelchair,or anywhere you can imagine4 Light Mode Options and Discharge Time of Full charging Tail Light: 4hrs (steady Light) ,10hrs (slow flashing), 12hrs (super flashing),8hrs(cycle flashing)How to Change 1. Press and hold the button for one second to turn on/off. 2. Click the button to change the light mode.2 hour charging time Automatic, fully charged cut-off system Smart charging ensures longer battery life Simple control button - Conveniently located on top of the light for easy access colour:Red shell red lightMaterial:ABSsize:7.2*1.7cmPackage Contents:2 * light2 * USB CableOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.