Material: ABS Type: Bluetooth car hands-free Applicable mobile phone model: Universal mobile phone with Bluetooth Installation type : Cigarette lighter type Output method: Bluetooth Input voltage: 12-24 Cable length: 0 Headphone power: 0 Operating humidity: 0-55 Operating temperature: 0-60 Power: 15.5 Microphone sensitivity: 0 Frequency response: 87.5-108MHz Speaker resistance: 0 Speaker power: 0 Noise: 85db (FM: 65db) PC interface type: USB Functional features: 1. Dual USB3.1A 2. Battery voltage detection 3. Answer calls hands-free 4. Mobile phone navigation voice 5. U disk TF card expansion, support Lossless format playback 6. Charge two mobile phones at the same time, support charging while listening to music 7. Noise cancellation function, built-in noise cancellation circuit, making the call sound clearer Product parameters: Power supply mode: cigarette lighter power supply USB output: 3.1A Support TF card/U Disk capacity: ≤32GB Supported file types: MP3/WMA/APE/FLAC/WAV Working current: 50-100mA DC12V Bit rate: 64 -320kbps FM frequency range: 87.5-108MHz Signal to noise ratio: 85db (FM: 65db) Harmonic distortion: