Feature: 1. STYLISH APPEARANCE: The perfect combination of LED mark and polyester ribbon make the glitter collar cool and stylish with high visibility 2. BLUETOOTH CONNECTION AND PROGRAMMABLE: 12x48 LED mark screen, colorful LED collar, very stylish, Bluetooth connection to your smartphone(for iOS 8.0 and for Android 4.3 +), app programmable pattern, text, doodle, rhythm, friendly to use 3. EASY TO USE: Download the for SPOTLED app from the for iOS App Store or scan the QR code in the user manual, long press the power button to activate the LED screen and connect to the phone Bluetooth hotspot. Within the app, you can enter text or create your DIY doodle style collar to grab everyone attention 4. RECHARGEABLE DESIGN: The pet dog safety collar has a built in rechargeable battery that run for more than 10‑15 hours on a full charge. Don't worry about taking with you on camping trips to easily handle your dog 5. EXCELLENT PERFORMANCE: LED collar is made with fine workmanship, possess compact appearance, can make sure durability and stability Specification: Item Type: Programmable LED Collar Material: Fiber Battery: 1 x 602040 polymer lithium battery 450mah APP: For SPOTLED APP Connection Mode: Bluetooth. Package List: 1 x Collar1 x USB Cable Note: 1. Do not use your phone Bluetooth connection directly as a direct connection may result in an error message. 2. Please run the APP and connect to Bluetooth from the APP.