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: 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 TaillightsColor: BlackMaterial: ABS+PCCharging Time: 4HAvailable Time: 6HWaterproof Rating: IPX3Weight: Approx.90g/3.2ozSize: Approx. 7.2x2.7x1.8cm/2.8x1.1x0.7inLamp Beads: LED/Red and Blue SmdBattery 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