MagicShine MJ-872 1600 Lumen LED Cycling Bike Light With 6.6Ah Battery Pack (50% more capacity than the default battery) Manufacture Rated at 1600 Lumens 3.7 oz (light head), 14 oz (battery) 6600mAh rechargable BAK Li-ion Battery and charger included 25 degree flood light beam illuminates a large area 4 brightness setting