Smart Bike Tail Light,Brake Sensing,Auto On/Off Bicycle Rear Lights for Night Ride,Ultra Bright LED Back Lights,Memory Gear Function,IPX6 Waterproof,Cycling Safety Taillight () - ACRUNU SR1

• BRAKE SENSING: The bike taillights adopt advanced brake sensing technology, which will stay on for three seconds when braking to warn the vehicles behind, which can improve your riding safety INTELLIGENT TURNS ON/OFF： This intelligent bike brake light will automatically turn off when no vibration is felt for forty seconds， and automatically light up when feeling vibration； To some extent, it can save electricity PHOTOSENSITIVE SENSING:The rear bike light will automatically light up in dark environments and automatically turn off in bright environments. Ensure that you are always visible on the road MEMORY GEAR FUNCTION:The memory gear function of bike tail lights, when you turn on the lights, it lights up the light mode you used last time, so you don't have to switch to your favorite light mode again ULTRA-LONG BATTERY LIFE: The battery capacity of this bicycle tail light is 400mAh, with a range of up to 12-60 hours. It can be charged through USB and fully charged in 2.5 hours. perfect for long rides SIX WATERPROOF LIGHTING MODES: Enjoy a customizable riding experience with six lighting modes and brightness adjustment options. The IP6X waterproof rating ensures your smart bike light stay protected in any weather conditions TWO INSTALLATION METHODS: Bicycle rear light have saddle rail/seat post mounting installation methods, which are compatible with most bicycles. Easy to install, and no installation tools are required