This Serfas USB E-LUME combo includes a front and a rear bike light. The front light has an alloy body, a button that shows charge status and low battery. It can reach a maximum of 605 lumens. The rear light is IPX6 waterproof and has last mode memory, with a max output of 30 lumens. The front light runtime varies: solid mode offers 1.75 hours at max, 2.75 hours at high, 4 hours at medium, and 8 hours at low. Flash mode gives 80 hours at high and 25 hours at low. The rear light runtime in solid mode is 2 hours at high and 4 hours at low. In flash mode, it's 8 hours at high, 5.25 hours in daytime flash, 10 hours at medium, and 13 hours at low. The front light takes 4 hours to fully charge with a wall charger, while the rear light only needs 2 hours. The front light weighs 162g and the rear one weighs 60g.
Using these Serfas bike lights is easy. First, make sure the lights are fully charged. The front light has a button to check the charge status and see if the battery is low. Mount the front light on your bike's handlebars and the rear light on the seat post or rear rack. You can switch between different light modes (solid or flash) according to your needs. When it comes to charging, use the provided wall charger. The front light takes about 4 hours to fully charge, and the rear light only needs 2 hours. Remember, the rear light is IPX6 waterproof, so it can handle a bit of water, but it's best not to submerge it. Keep the lights clean by wiping them with a soft, dry cloth regularly. If you notice any issues with the lights, like reduced brightness or strange behavior, check the battery level or contact customer support.
