Smart Bike Rear Light, 60 Lumen Rechargeable Bike Rear Light, 4 Modes, IP65 Waterproof, Colorful, 7 Colors, Lightweight, Wear-Resistant, Automatically Turns On

🌛VIBRATION AND BRAKE SENSITIVE: Day or night, after detecting braking, the mountain bike taillight will automatically reach its maximum brightness to alert cyclists, pedestrians, and vehicles behind. Furthermore, at night, in breathing or flashing mode, the taillight will automatically turn off after 30 seconds of the bike being stopped and will automatically turn back on as soon as a vibration is detected again.🌛USB RECHARGEABLE: The ROCKCROS bike taillight has a built-in 400mAh lithium polymer battery, which offers fast charging and a long battery life. There are 4 blue power indicator lights in the center of the taillight, allowing you to monitor the battery level and charge it in time. 4 lighting modes: constant brightness - 20h, breathing flash - 40h, fast flashing - 40h, slow flashing - 40h.🌛IP65 WATERPROOF & ROBUST: The casing of this rechargeable rear light is made of CNC aluminum alloy, resistant to scratches and drops. With an IP65 rating for water and dust resistance, this rear bike light can be used in heavy rain and doesn't need to be removed when washing your bike (Note: Do not submerge it in water). 🌛BRIGHT & SMOOTH LIGHT: Unlike traditional rear lights, this bike rear light uses COB lamp beads, and the surface uses PC optical lenses, making the rear light very bright, yet also very soft and glare-free. 🌛EASY INSTALLATION: There are 3 styles to choose from - single-seatpost installation, single-seatbar installation, and a 2-way installation. Please choose according to your needs. Product Description: Smart Rechargeable Lightweight Wear-Resistant Bike Rear Light with Automatic Turn-On, Vibration and Braking Sensitive, USB Rechargeable, IP65 Waterproof. IP65 Waterproof. With an IP65 rating for water and dust resistance, this This rear bike light can be used in heavy rain and does not need to be removed when washing your bike (Note: Do not submerge it in water). ROBUST: The casing of this rechargeable rear light is made of CNC aluminum alloy, making it scratch and drop resistant. LIGHTWEIGHT: At only 55g, this rear light is so light and portable that you can carry it in your bike panniers. BRIGHT & SMOOTH LIGHT: This bike rear light uses COB lamp beads, and the surface uses PC optical lenses, making the rear light very bright, yet also very soft and not dazzling. RECHARGEABLE: The RockCros bike rear light has a built-in 400mAh lithium polymer battery, which offers fast charging and a long battery life. SMART CHIP: Using a smart chip, after detecting braking, the mountain bike rear light will automatically reach its maximum brightness.