Features: Simply press the phone button to activatesiri, the voiceassistant, and easily listen to songs, navigate, make calls, listen to audiobooks, and more. 7-color ambients light: The fm transmitter bluetoothcompatible car adapter has 7 colors of led backlight, including red, green, blue, yellow-green, purple, cyans, and silver-white. Led breathing lights not only add to the fun and ambiances of night driving but also make the device easier to operate. Widely applicable: The cigarettelighter interfaces connection is compatible for 12-24v mainstream vehicles, such as car, suvs, and trucks. It has a memory function, after the first pairing connection, it will automatically connect. External microphone, one-button operation, Bluetoothcompatible hands-free calling, hands-free, safer driving. Automatically reconnect when power on, memorize the frequency, restart after the track is powered off, and start playing from the track when the power is off. Specifications: Material:Plastic Size: 4.5cm/1.77in x 4cm/1.57in x 7cm/2.76in Power supplyvoltage: 12-24V Bluetoothcompatible: V5.0 Quick Charging 3.0 output: 5v/3a9v/2a12v/1.5a. PDport output: 5v/3a9v/3a12v/2.5a. TYPEC/ No-load voltageof fast charging port: 5V/9V/12V. Quick Charging 3.0 Over-current protection: 3-3.3a. TYPEC overcurrent protection: 3-3.3a. Temperature protectionof powerIC: the power ICstops working at 130. Frequency modulation transmission range: 5M US Fm frequency: 87.5-108MHZ U disk capacity: 32G at most FM function: Yes Playtime: unlimitedtime Screen color: monochromes screen Power supply mode: cigarettelighter car MP3. Audios source: car integrated MP3 player Package Includes: 1x Car Adapter note: ①.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. ②.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings.