• The bike's rear light has five modes to switch: 1. Red Slow Flash 2. Red Strobe Flash 3. Breathe Flash 4.  Red/Blue/Purple Switching Strobe  Flash 5. Red Steady On. Five modes for your choice, improve the safety of riding while also enhancing the fun, making you different in the crowd
• Easy to install, no extra tools needed, can be easily taken with you so it doesn't get stolen
• IPX6 waterproof design makes it work well even you get caught in the sudden rain, meets daily cycling needs, do not recommended soaking in water or liquid for a long time
• ABS body, lightweight and compact, durable and anti-drop, PC optical lens and COB light beads keep the light bright and not dazzling
• Vibration sensing design allows for automatically waking up the tail light and it will turn off after 30 seconds when sensing no vibration
• With intelligent brake sensing, the taillight lights up after a brake to warn the rear car

Specifications:

• Brand: ROCKBROS
• Model: Q4
• Material: ABS+PC
• Waterproof grade: IPX6
• Lamp beads: COB lamp beads
• Weight: yue'deng'yu23g/Pc
• Mode: 5 lighting modes / 3 brightness adjustment
• Battery life: high light/8-16h, medium light/15-30h, low light/25-50h