Simplistic safety light combo pack designed to be seenEasy to install silicone strap attachment is compatible with 22.2-31.8mm barsBoth lights feature 3 modes including 1 steady and 2 flashing modesPowered by 2 CR2032 batteries each (included)Black3F/3RComboSilicone Strap12/6UPC/EAN/GTIN: 888571063101