Join forces with our popular Dayblazer 550 combined with the Grid Rear, packing a punch with lumens, COB technology, multiple modes and extended battery life. The Dayblazer 550&';s high-power BLITZ daytime running mode and side visibility grab the attention of cars or light your way through a dark section of the commute. The Grid Rear Light has a wide COB light array and long run time. Ready for those commuting in the city, riding the open roads, or heading to their local trail. The Dayblazer 550 and Grid Rear Light Set offer plenty of rechargeable power to keep you visible while out riding and are well-powered to be seen. USB-C - Modern USB plug standard to ensure you can stay charged and ready to ride ECO MODE - Extremely long run time in our Eco Mode for those riding all week, or on long daily rides. Eco Mode also extends the Pulse and Strobe modes by two hours. BATTERY GAUGE - Small color LEDs in the power button help you monitor your light battery power, to tell you when it&';s time to charge your light once more. Green = 100-50%, Orange = 50-25%, Red = 25-0% MEETS ANSI FL-1 STANDARD - This standard was created by the American National Standards Institute (ANSI) to provide consistent performance measurements for handheld lights. LIMITED LIFETIME WARRANTY - Restrictions and conditions apply.