Using your Blackburn Grid USB Rear Light is easy. First, charge it using the included USB - C cable and any standard USB port. Once charged, you can choose from four different modes according to your needs. If you need a bright light for a short time, go for the solid mode. For longer rides, the eco mode is a great option. To mount the light, use the silicone strap wrap mount around your bike part or use the pack and belt loop attachment clip. When using the light, make sure it's securely attached to avoid it falling off during your ride. In terms of maintenance, keep it clean and dry. After exposure to water or dust, gently wipe it with a soft cloth. If you're not using the light for a long time, store it in a cool and dry place.