CygoLite Expilion 720 USB Headlight. The CygoLite Expilion 720 USB headlight lights up the night with 720 lumens of show stopping brightness. Featuring a powerful Cree XM L2 LED and custom Enhanced Cycling Optics, the Expilion 720 is perfect for night time riding either on or off road. There are eight different light modes to perfectly meet your riding demands and the rechargeable Li ion battery is easily replenished via USB cable or wall outlet. The Locktite handlebar mount is rock solid and installs tool free for the ultimate in convenience. Additionally, the Expilion 720's alloy and plastic construction is super durable yet weighs in at just 140g.