XLC Battery Front Light Sirius B 40 With mount,Includes reflector,40/20/10 lux, Osram LED,1,000mAh lithium-ion battery with micro-USB slot,Includes 80 cm USB cable,Weight: 104 g,Integrated indicator,Corresponds to German StVZO for all bikes,. XLC Battery Rear Light Sirius B 2 ultra bright LEDs ,Lithium-ion battery 300mAh with micro-USB slot,Universal mounting options: 19-48 mm diameter,Weight: 32 g,Includes charging cable,Corresponds to German StVZO for all bikes.