This is the best strobe for drones without a doubt! The individual strobe is lightweight for smaller drones, is robustly built for endurance, and surprisingly bright for long distance visibility during the day and at night. The as-shipped strobe is a white light used mainly for collision avoidance. Also included in the package is a green lens and a red lens that can be used for direction of travel when a pair of strobes are purchased. I would actually recommend purchasing four (4) strobes. Two white light strobes for the top and the bottom of the drone to mark it for collision avoidance. Then a green strobe and a red strobe for opposing sides to easily indicate direction of travel. The strobes are securely attached to the drone's body with the included Velcro-type strips. Finally, each strobe comes with its own charging cord that can be charged using any compatible USB connection that supplies 5 volts direct current (VDC). These strobes are highly recommended for drone safety as well as a product that is built with integrity. You will be glad to have four (4) or more of these strobes in your drone accessory inventory.