BT In-Car Speakerphone: Supports one-button answer/reject calls and activation of smartphone voice assistants for easy and convenient operation.Intelligent Noise Reduction: Provides a clear and immersive calling experience by eliminating background noise.Stable Connectivity: Built-in high-performance BT5.0 chip ensures stable connection, allowing for simultaneous connection with two phones.Automatic Connection: Once successfully paired, the device automatically connects to your phone when you enter the vehicle, ensuring a stable and prompt response.Long Endurance: Built-in large capacity battery offers a 20-hour working time and automatically shuts off after 5 minutes of no connection to conserve power.Specifications:Color: BlackMaterial: ABSBT Standard: 5.0+EDRBT Frequency: ISM2.4GHz-2.48GHzBT Connection Distance: 0-10 metersSpeaker: 8R 1.5WBattery: Built-in 3.7V, 500mAh Lithium BatteryCharging Time: 2-4 HoursWorking Time: Up to 20 HoursStandby Time: Up to 100 HoursLanguage: Chinese, English, German, French, Japanese, Italian, SpanishItem Size: 128 * 52 * 16mm/ 5.0 * 2.0 * 0.6inItem Weight: 53g/ 1.9ozPackage Size: 145 * 47 * 67mm/ 5.7 * 1.9 * 2.6inPackage Weight: 125g/ 4.4ozPacking List:1 * Host1 * USB Cable1 * 3.5mm Audio Cable1 * Manual