Micro USB Rechargeable Tail light with Auto sensor.
By using the USB chargeable “EZ400mu” auto tail light as the base, it is even brighter and easier to use. The semitransparent bottom half allows letting in more light for the light sensor to work, even when installed beneath the saddle where it is usually dark, it can recognize the light intensity. At the same time, the sensor has been improved and shows better performance when used during daytime in tunnels where light shines in. We have adopted semitransparent materials to improve visibility from the sides, thus making it easier for the bicycle rider to check the light is functioning