Feature: 1. Multi Function: High performance version V5.0 EDR wireless chip, stable output performance, support for voice customization, automatic switch machine, save time and effort. 2. Long Battery Life: This hands free speakerphone has a built in 1200 mAh battery, 1000 hours of long lasting battery life, and about 20 hours of continuous talk time. 3. Volume Increase: Built in digital amplifier, which can greatly increase the volume and sound effects, the new silicone microphone, the call is as clear as face to face. 4. Multi Point Connection: Car bluetooth kit, advanced multi point connection, support two mobile phones online at the same time, 10m/32.8ft wireless transmission distance. 5. Noise Reduction: Built in DSP noise suppression function, CVC8.0 dual noise reduction technology, 4Ω 3W speakers, provide high definition stereo sound, clearer calls. Specification: Item Type: Car Speakerphone Material: Plastic Product Color: Black Whether Plug and Play: Plug and Play Transmission Rate: 100 (Mbps) Effective Working Radius: 10m/32.8ft Working Frequency: 2400 (MHz) Built in Battery: 1200mAh Lithium Battery . Package List: 1 x Car Speakerphone1 x Charging Cable1 x Back Clip1 x Manual