Bicycle Tools features: Bicycle tools intelligent bike tail light usb rechargeable light Color: we send based on the color or size of the main image of the product page. Quantity：we send based on quantity on title, if there is no quantity in the title, we send based on description. Bicycle Tools Intelligent Bike Tail Light USB Rechargeable Light The intelligent bike taillight can automatically turn on/off by detecting the environment around, optional auto/manual mode, waterproof, lightweight and rechargeable. Having two types of placing on cushion or pole , and two corresponding brackets for easy installation. Features: Optional auto/manual mode, intelligent on/off light control. Three lighting modes of continous, flashing and breathing. Compact and lightweight design. Aluminum alloy material, strong and water resistant. Professional bike stand design, fixed and uninstall easier. Very useful for most of bikes. Specifications: Type: Lamp: Cushion type, Pole type Bracket: Cushion bracket, Pole bracket (optional) Waterproof: IPX6 Lamp Size: 55 * 45mm / 2.17 * 1.77in Package Weight: Lamp: 90g / 3.17ounces Bracket: 60g / 2.12ounces Package Size: Lamp: 132 * 87 * 37mm / 5.2 * 3.43 * 1.46in Bracket: 81 * 41 * 31mm / 3.19 * 1.61 * 1.22in Package List: 1 * Bike Lamp 1 * USB Cable