Feature:1. CLEAR AND STEREO: Our upgraded car wireless speakers are designed for beautiful sound with Bluetooth V5.0 and EDR, HD Voice, Noise Cancellation technology and stereo speakers, you can enjoy clear calls and music wherever you are!2. VOICE OPERATION: This Bluetooth handsfree car kit supports for Siri voice helper, you can make a call, send a text message or get driving directions from the GPS app, you can also hear voice guidance during use, improved large buttons for hassle free operation, so you can fully focus on driving.3. AUTO CONNECTION: After first pairing, the car's wireless speaker is able to automatically connect to your phone, and the device turns off when Bluetooth is disconnected. This visor handsfree Bluetooth car speaker can connect to two Bluetooth cell phones at the same time while working, switching between music and calls easily!4. EASY TO USE: Simply clip this car Bluetooth speaker to your sun visor. Car stereo with Bluetooth speaker, designed for safe driving, mainly used for hands free calls on the road, also can be used as a conference table speaker or a portable music player with switching support. It's a great father's day gift.5. LONG BATTERY LIFE: Built in 300 mAh rechargeable battery, talk time up to 2024 hours, standby time about 500 hours, full charge takes about 23 hours.Specification:Item Type: Car Wireless SpeakerMaterial: ABSBluetooth Specification Standard: Bluetooth Version 5.0 and EDROperating Frequency Range: ISM 2.4GHz 2.48GHzTransmit Power: Class 2Wireless Connection Range: 010 MetersCharger Output Specification: DC 5V1.5ABuilt in Rechargeable Battery: 300mAh Lithium Ion Battery (included)Normal Charging Time: 23 HoursCar Speaker Talk Time: 2024 HoursStandby Time: About 500 HoursOutput Power: 4WSize: Approx. 5.5x8.7x2.3cm / 2.2x3.4x0.9in .Package List:1 x Car Wireless Speaker1 x Charging Cable1 x Clip1 x Instruction ManualNote:All data are measured manually, and there are certain errors in the measurement results.