Feature: 1. Multiple Functions: Dual purpose taillights, cycling lights, flashing red and blue warning lights, multiple light modes, USB cycle charging, suitable for different scenarios. 2. Five Lighting Modes: One key adjustment, main light strong light, low light, red and blue burst flash, auxiliary light strong light, low light, to meet the needs of different scenes. 3. Intelligent Charging: Туре C fast cycle charging, stable voltage, high current fast charging, convenient, safe and practical. 4. Built in Polymer Battery: High efficiency and stability, fast charging, stable voltage, lighter, and higher safety. 5. IPX3 Waterproof: Life grade waterproof, adapt to various harsh environments, and can be used normally in heavy rain and snow. Specification: Item Type: Red and Blue Warning Taillights Color: Black Material: ABS+PC Charging Time: 4H Available Time: 6H Waterproof Rating: IPX3 Weight: Approx.90g/3.2oz Size: Approx. 7.2x2.7x1.8cm/2.8x1.1x0.7in Lamp Beads: LED/Red and Blue Smd Battery Parameters: Built in 1x Polymer Battery, 800mAh (included) Lighting Mode: Main Light Strong Light-Low Light-Red and Blue Burst Flash-Auxiliary Light Strong Light-Low Light. Package List: 1 x Lamp1 x Buckle1 x Band1 x USB Cable