High-performance Bluetooth chip V5.0+, stable output power. Voice prompts throughout the journey, never miss a call. Automatic switching, saving effort and worry. Supports Siri voice control. 600 mAh battery, 500 hours of standby time. Continuous talk time is approximately 10 hours. Built-in digital power amplifier, greatly increasing volume and sound effect. Advanced multipoint connection, supports two mobile phones online simultaneously. Built-in DSP noise reduction and cancellation function (CVC8.0 dual noise reduction technology). Bluetooth transmission distance: 10M. Speaker: 4 ohm 2W, high-definition stereo sound. Color: Black Material: ABS Size: 8.5 x 8 x 2cm Package Contents: 1 x Bluetooth Car Kit 1 x USB Data Cable 1 x Steel Clip 1 x Car Charger Adapter Only the above package contents are included; other products are not included. Note: Light and different displays may cause the color of the item in the picture to differ slightly from the real thing. The allowed measurement error is +/- 1-3 cm.