Car Mp3 Bluetooth Player Non-destructive Sound Quality Intelligent Fast Charging Voltage Detection FM Frequency Adjustment Bluetooth Calls Specification: Product Name:Cars battery chargers Product color:Black Material: ABS Gross weight: 56g/0.12lbs Package size: 9.5x7.0x4.5cm/3.7x2.7x1.7lbs Current output:3.1A Features: lossless audio soundHIFI sound quality intelligent noise reduction to make your life more comfortable, high resolution, high performance stereo, no lag, support MP3/FLAC/WMA/APE lossless music. Hd bluetooth callBluetooth 5.0 HD call support hands- call Android and ios systems, background noise reduction processing, so that car music and mobile phone calls clearer. Voltage detection Security Warnings Hd display,security warnings at a glance, too low or too high voltage will lead to battery damage and can not start the car. Intelligent fast charge3.1A double USB expand smart fast charging, Faster charging, charging for a while on the way to work, mobile phone full charge for a day. Compact device multi-functionOver charge protection, over current protection, over power protection, over voltage protection, over current protection, output protection, high temperature protection, short circuit protection. Package Include: 1x Cars chargers 1x English instruction