Smarter Shopping,Better Living! Feature: 1. High-performance version of Bluetooth chip V5.0 + EDR, stable output performance 2. Full voice broadcast, never make any phone calls 3. Automatic switch machine, save effort and worry 4. Support Apple Siri voice control 5. 600 mAh battery, battery life 500 hours 6. The continuous talk time is about 10 hours 7. Built-in digital power amplifier, greatly increase the volume and sound effect 8. Advanced multi-point connection, support two mobile phones online at the same time 9. Built-in DSP noise suppression and echo cancellation function CVC8.0 dual noise reduction technology 10. Bluetooth transmission distance: 10M 11.Speaker: 4Ω2W, high-definition stereo Specification: Product Name: Voice Control Car Sun Visor Bluetooth Product size: 85mm*80mm*20mm Product color: black Product power supply: built-in 600mAh lithium battery Charging interface: type-C interface Charging time: about 2 hours Talk time: about 10 hours Standby time: about 500 hours Bluetooth version: V5.0+EDR Transmission distance: 10M packing list: 1 x Bluetooth car kit 1×USB cable 1×steel clip 1×car charging adapter 1×Instruction Package weight: 140g Note: Please allow 1-2cm size error for manual measurement. Best wish for you！