Material: PC Plastic Light Source: White LED Headlight, Red LED Tail Light Lumen: 200 lm for headlights, 50 lm for taillights Battery capacity: 350 mAh for headlights, 230 mAh for taillights Battery life: 3-12 hours for headlights, 3-10 hours for taillights Weight: 24g for headlights, 20g for taillights Safety and Visibility: Front and rear bike light clusters are super bright for maximum safety and visibility. Elastic silicone mounting straps ensure maximum stability. Stay safe even on rough roads. Easy to install and use: This bike light set is lightweight, portable, easy to install and easy to use. The installation of the headlight should be tilted at a certain angle to prevent the light from entering the eyes. USB charging lamp: can be charged with any device with a USB port, which allows save time and money with fast battery charging. Lightweight, durable, IPX5 waterproof: The bike light suit is made of high quality PC plastic, IPX5 waterproof. Suitable for extreme weather conditions including rain, snow, fog and haze. Versatile for cycling, hiking, camping or any outdoor activity, and can be used as an emergency flashlight or for other nighttime activities in the event of a power outage. 2 pieces