High brightness LED lights. Rechargeable lithium polymer battery with automatic power-off when fully charged. Sealed and waterproof design. Ultra-wide-angle irradiation range for enhanced safety protection. Two mounting options: adhesive installation for attachment to surfaces, strap installation for secure fit on various vehicle body shapes. Product title: Bicycle Tail Light 7-Color Drone Night Warning Light 7-Color LED USB Charging Waterproof Light color: White, blue, red, yellow, green, purple, ice blue Light modes: 4 modes – fast flashing, SOS flashing, constant on, seven-color gradient flashing Brightness levels: 22 levels, three intensity settings per color Switch type: Push button switch – long press to turn on/off, short press to cycle through modes after activation Battery life: Up to 8–10 hours in slow flash mode, up to 1–2 hours in constant on mode (approximate) Quantity: 4 pieces Color: Black Material: ABS Size: Approximately 30x13x12mm / 1.18x0.51x0.47 inch Package Contents: 4 x Bike Light Note: Lighting effects and display differences may cause slight variations between the product color in images and actual color. Measurement tolerance: +/- 1–3 cm.