ROCKBROS Bicycle Smart Brake Rear Light Five Lighting 80 Hours of IPX6 Aluminum Battery Level Easy for Road Cross Day and Night and School Taillight,

Brake Warning & Photo- and Vibration-Sensing Automatic On/Off: This Q1MAX bicycle taillight is our latest, enhanced version, featuring a smart brake warning function. It lights up at full brightness when it senses braking or deceleration, alerting those behind you. It automatically turns off in bright light (such as in strong sunlight) or after 30 seconds of stopping, and automatically turns on in dark places (such as in a tunnel) or when it detects vibration. (Double-click the button to switch between automatic and manual modes. The photo- and vibration-sensing functions are enabled in automatic mode.) The Q1 does not have these features. Five Lighting Modes and Battery Level Check: Switch between five lighting modes with a single button. Q1: Flashing red (20 hours), Alternating red and blue (20 hours), Breathing seven-color flashing (15 hours), Rapid red flashing (50 hours), Steady red (8 hours). Q1MAX: Flashing red (25 hours), Alternating red and blue (30 hours), Breathing seven-color flashing (20 hours), Rapid red flashing (80 hours), Steady red (15 hours). [USB Charging & Battery Level Check] This bicycle backlight uses a built-in 300mAh battery that can be repeatedly recharged via USB-C, eliminating the need for batteries. It's incredibly convenient, eliminating the need to worry about running out of power in a short amount of time. Four blue battery status indicators intuitively display the remaining battery level when you turn it on. It also makes it easy to know when it's time to recharge. *Charging time: approximately 2 hours. A charging cable is included. [High-Strength Aluminum Alloy & IPX6 Waterproof] The high-quality aluminum alloy exterior is lightweight and durable. It offers excellent impact resistance, heat dissipation, and corrosion resistance, and feels great in the hand. The bicycle taillight's IPX6 waterproof technology ensures reliable waterproofing in any weather or on bumpy roads. It protects the taillight from water that can cause malfunctions! It's perfect for everyday use, such as commuting to work or school, as well as outdoor activities like hiking and cycling. [Easy Installation & After-Sales Service] This product can be attached to either the seat rail (under the saddle) or the seat post (the necessary tools for both installation methods are included). It can be quickly installed to suit your vehicle and preferences. There is a one-year warranty, so if the product breaks within this period, please feel free to contact us. We always provide reliable and satisfactory after-sales service. Please rest assured.