Waterproof bicycle smart brake tail light brake sensor 8-speed flashing riding warning light night USB charging tail light

This bicycle tail light, with intelligent brake detection, high brightness warning light, USB rechargeable, waterproof, long-term endurance and other functions, improve riding safety, light and portable, simple installation, suitable for a variety of models. Features: Automatic brake detection function, tail lights flash when braking to warn vehicle coming from behind to ensure riding safety. Red streamline highlight led, brightness 25LUX, a variety of flash mode. The built-in rechargeable battery can be used for a long time at one time. Waterproof grade: IPX4, suitable for use in small to moderate rain environment, please do not put the product in water immersion or use in heavy rain environment; please plug the USB cover tightly during use. USB is rechargeable and easy to use. Small and portable, easy to install. Specifications: Material: plastics Input: direct current 5V, 0.5A Battery: 5V, 900mAh Item size: 65 * 54 * 42mm / 2.6 * 2.1 * 1.7in Item weight: 100g / 3.5ounce Package size: 150 * 100 * 50mm / 5.9 * 3.9 * 2.0in Package weight: 128g / 4.5ounce Packing List: 1 * Tail Light 1 * Rubber Ring 1 * Chargings Line