1、LED DISPLAY SCREEN: The pet collar features a 12x48 LED display screen with colorful lighting design and high visibility, perfect for camping or night walking. 2、BLUETOOTH CONNECTION: The LED collar uses Bluetooth to connect to phone (for iOS 8.0 and for Android 4.3 and above), uses the APP to program pattern and te 3、EASY OPERATION: Download the for SPOTLED APP on your phone, long press the power button to activate the LED screen, and connect to the phone Bluetooth hotspot. 4、DIY TEXT STYLE: In the application, you can enter text or create your own DIY graffiti style to attract others attention and add highlights to the LED collar. 5、BUILT IN BATTERY: The Bluetooth collar has built in 450mAh battery that runs for more than 10‑15 hours after a full charge, can be used anytime, anywhere.