【ADVANCED DESIGN】330mAh rechargeable lithium battery, charges via USB with included cable; compatible with power bank, computer, or AC/DC adapter. 【BRIGHT LED LIGHTS】5 long-lasting SMD LEDs per light; color configuration as shown (1 red, 1 green for port and starboard, 1 white for stern); offers 4 lighting modes: full brightness, chase mode, quick chase mode, and flashlight mode. 【EASY INSTALLATION】Features one-touch dismount button; includes silicone mount strap with 4 buckle positions for secure fit; bracket with adjustable hinges to set optimal angle. 【APPLICATIONS】Ideal as navigation light for boats, pontoons, and kayaks; also serves as safety light for bicycles, helmets, skateboards, strollers, wheelchairs, dog collars, and backpacks; suitable for walking, running, fishing, camping, and hiking. 【PACKAGE INCLUDES】4 safety lights, each with USB charging cable; 2 double-tube safety whistles (120dB); 2 reflective lanyards; 1 roll of waterproof tape; lifetime support available for assistance.