Princeton Tec Push - self contained, High power Maxbright LED, 100 lumens, oversized on/off switch quickly toggles through high, low and flash modes, independent light pipes emit through side windows for 260º of visibility, side flash disabling, race proven QR bracket for standard and oversized bars, 3xAAA alkaline batteries included, 115g with batteries, Red, 3 modes, burn time: high 4h, low 14h, flash 63h, each.