BikingMyWay FrogMan Bike Safety Light Set (2PCS) - Batteries Preinstalled - FREE 5 CR2302 Batteries Included &ndash; High Power High Brightness LED &ndash; Three Working Modes: Fast Flash, Slow Flash, Steady - Durable and Flexible Silicone Band - Can be Mounted on Handlebar, Seat Riser, Fork, Backpack, Helmet - Black Shell White Light, Red Shell Red Light, Green Shell Green Light, Blue Shell Blue Light &ndash; Simple and Unique Design Package contains a pair of bike lights each with pre-installed CR2032 batteries, and a bonus set of 5 CR2032 lithium batteries. Size (each piece): 50mm X 45mm X 26mm, Weight: 27g Three Working Modes: Blink Fast, Blink Slow, Steady On. One-Touch Switch Design: cycle through the modes by pressing the light lens. Quick Release Design: installation or removal without any tools. Silicon Band: heat and cold resistant (-40C - +220C) Can be mounted on bikes handlebar, seat post, and frame ssecurely and easily. Due to its lightweight, it can also be installed on or attached to helmets, bags, and even clothing Battery Life: 35 hours when in steady, 160 hours when slow blinking