Features: 1. The latest version of the Bluetooth-compatible chip, V4.2 + EDR, the output is stability. 2. Voice broadcast all the way. 3. With function of automatic power-on and shut down, which can save worry and labor. 4. Siri voice control for Apple. 5. 550 mAh battery, long standby time for 1000 hours. 6. The duration of the call is about 10 hours. 7. Built-in digital amplifier for greatly improved volume and sound effect. Handsfree Car Speaker Kit for Cell Phone-Advanced multi-point connection, which can support two mobile phones simultaneously online. Built-in DSP noise suppression and echo cancellation function.(CVC8.0 dual noise reduction technology). Specifications: Car charger line: 50cm Bluetooth-compatible transmission distance: 10M Speaker: 42W, high-definition stereo sound Size: about 100*60*21mm/3.94*2.36*0.83in Color: Black Charging time: about 2 hours Battery capacity: 550mAH Call time: about 10 hours Standby time: up to 500 hours Bluetooth-compatible version: V4.2+EDR Transmission distance: 10M Package Included: 1 x Car charger 1 x USB cable 1 x Metal clip 1 x Manual 1 x Bluetooth-compatible handsfree kit Notes: 1. Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures. 2. Please allow slight dimension difference due to different manual measurement. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.