The Bell Sports Arella 400 is a perfect light for anyone who commutes to work or frequently rides their bike on roads. The Arella 400 not only functions as a steady and flashing tail light, but also has a sequential turn signal mode. The wireless remote control fits snugly on your handlebars, while the tail light is designed to fit nearly any size seat post, its simple, silicone strap mount makes it easy to put on and a flash to remove when you reach your destination. All 3 modes can be controlled from the remote. Simply push the right arrow to signify a right turn or left arrow for left turn. This allows you to be extra visible on the rode not only to other riders but also cars. The Arella 400’s sophisticated design is USB rechargeable.