Features: Make Flight Safer and More Reliable: Signal warning lights designed for drone night flying, which is playing the role of night identification and increase the fun of night flying. 2-Color Lights Flash: The red and blue color lights flash alternately, and the brightness is high, which brings different visual effects when night flight. Strong anti-fall performance, safe and durable. Non-destructive and Easy Installation: With strong adhesion stickers at the bottom of lights, simple and quick installation and removal, no need to worry about damaging the fuselage, could be placed at the bottom of the arm or any position of the fuselage Mini & Lightweight: Mini size design, and net weight of one light is only 4g, won't bring your drone heavy loading; take up a little space, and easily fit in the drone storage bag. Signal Warning Lights Kit: Including 4pcs lights, and shipped with an addition 8pcs button batteries and 8pcs round stickers. Extremely long battery life. Practical accessories for drone amateur. Specifications: Material: Plastic Light Color: Red/ Blue flashing alternately Battery: CR927 Flight Time: about 10 hours Item Size: 1.3 * 1cm/ 0.5 * 0.4in Item Weight: 4g/ 0.1oz Packing List: 4 * Strobe Lights 8 * Batteries 8 * Round Stickers