Features Stylish BTLED Sign: Featuring a 12 x 48 dot color LED screen, this sign connects to your smartphone for customizable graphics and messages, elevating your biking experience User-Friendly APP Control: Easily download the SPOTLED app to program your LED display with text or DIY designs, making it simple to attract attention while cycling Exceptional Visibility: With a 180-degree field of view and visibility up to 150 meters, this bright LED display ensures you're seen clearly, even in fog or darkness Features: 1、BT LED SCREEN: 12 x 48 dot LED screen, color LED, very fashionable, BT connected to your smartphone (for IOS 8.0 and for Android 4.3 or above), application programmable graphics, text, graffiti, rhythm, user friendly. Please do not use the BT connection of your phone directly, as connecting directly may result in error messages. Please run the app and connect BT from it. 2、EASY TO USE: Download the for SPOTLED application from the for ios App Store or scan the QR in the user manual, long press the power button to activate the LED screen, and connect to the BT hotspot of the phone. In the application, you can enter text or your own DIY graffiti style to attract everyone's attention. 3、LARGE FIELD OF VIEW: 180 degree field of view width, visibility up to 150 meters, 8.86 x 2.17 x 0.59 inch (225 x 55 x 15mm) color LED screen, bright bike tail lights, even in foggy, rainy, and even pitch dark nights, can be seen from 150 meters away. Provide you with ultra high brightness without dazzling. 4、4 MODES OF REMOTE CONTROL: The remote control on the handle is convenient for cyclists to control during cycling. Suitable for mountain bike, and road cycling. 4 modes, left turn light, right turn light, left and right traffic light, DIY design light. 5、WIDELY APPLICABLE: 450mah battery with ultra long battery life. Install the LED sign on your bike, helmet, scooter, stroller, wheelchair, or anywhere you can imagine. Strengthen the safety factor of night travel. Specification: Item Type: BT LED Sign Material: ABS Screen Battery: 1 x 602040 polymer lithium battery 450mah (shipped with built in battery) APP: For SPOTLED APP Connection Method: BT Remote Control Battery: 2 x 3V 75mAh CR2016 button battery (shipped with built in battery) Package List: 1 x LED Sign 2 x Screw 2 x Nut 1 x Cross Screwdriver 1 x USB Cable 3 x Lamp Ho Package List 1 x LED Sign 2 x Screw 2 x Nut 1 x Cross Screwdriver 1 x USB Cable 3 x Lamp Holder Parts 1 x Remote Control 1 x Hook