Bluetooth car MP3 playerBuilt-in FM transmitter, MP3 decoding, and stereo Bluetooth wireless transmission chip,Able to play the audio or songs from the TF card, USB flash drive, mobile phone through your car stereo,No need to modify your car,You can enjoy music while driving and use your hands-free mobile phone to talk.Entertainment is the right thing.1.SAFETY WITH GREAT DESIGN，SURFACE SEAMLESS INJECTIONMOLDING TECHNOLOGY STABLE. SAFE AND DURABLE. 2.NON-SLIP SPRING STRIP PREMIUM STAINLESS STEEL，NOT EASY TORUSTLONG LIFE.STRONG RESILIENCEMORE STABLE. 3.SAFETY PROTECTION, FAST CHARGING. INPUT OVER/UNDER VOLTAGEPROTECTION. AUTOMATICALLY IDENTIFY INPUT VOLTAGE INFORMATIONSELFCUT OFF AT ABNORMAL INPUT VOLTAGE.BT version: V5.0+EDRFrequency: 20h~20KHZVoltage: 5v+/-0.5Working current：45mAh (Maximum)Standby Current: 25mAh (Maximum)Frequency: 2.402~2.480 ghzEffective distance: 5mRF output: 4 dBmFMFM: 87.5MHz~108.0MHzEmission power: 87 dBuv/107 dBuvEffective distance: 5m1. Support TF card and U disk, delicate, small and portable2. Answer/end calls3. Connect to navigate4. Ultra-low power consumption, Bluetooth music playback for 1 hour only consumes 5% of power5. Built-in smart microphone for excellent sound quality