Multi-Function Design: Combination of Car Charger, Smart Single Port USB Quick Car Charger+ Wireless Bluetooth Headphones (Vehicle Mounted car Charger + Mini Bluetooth in-ear Headset). Compatible with most Bluetooth enabled cell phone/Tablet/PC/Laptop Noise Cancellation: Excellent noise cancellation tech to reduce background music offer clear sound when you answer the phone call Built-in Microphone: The Bluetooth Earpiece built-in microphone answer/reject phone calls conveniently, keep You Safe all the way around Fast Charging: USB port 2.1 A fast smart charging. Start charging when the car start, stop charging when the car stop. charging all the time with full power The package box included : Roman Bluetooth earpiece*1, Car charger adapter*1, Micro USB Charging Cable*1,Quick Start Guide*1