LONG BATTERY LIFE - Rechargeable lithium-ion battery provides up to 22 hours of talk time and up to an incredible 1000 hours on standby and it takes less than 2 hours to fully charge. Make the bluetooth receiver for car great for long road trips. DRIVE WITHOUT DELAY - Built-in vibration sensor detects automatically turns on the car kit, allowing the handsfree bluetooth to reconnect with your phone. When device is not in use, the device will turn off automatically. Which make it a wonderful fathers day gifts. SAFE DRIVING - This upgraded hands free bluetooth for cell phone supports Siri connection and Other brand Voice Assistant, you can make phone calls, send texts or get driving directions from GPS applications, and stay fully focused on the road. VOICE GUIDANCE - This bluetooth speaker for car can connect 2 bluetooth cell phones simultaneously on working & easily switch between music & calls. And you will hear voice guidance in the following situations: power on, power off, pairing, connected, disconnected, battery low, which make it so easy to use. CLEAR CALLS - It's easy to connect the bluetooth hands free car kit to your phone, and then place it with the included clip on the sun visor. With the noise-cancellation technology and volume controls, our extra large speaker will make your calls crystal clear no matter where you are!.