The Call Capture B800-1900-2P Wireless Cell Phone Signal Booster Amplifier is a powerful device designed to improve cell phone signal strength in vehicles. With a gain of up to 50dB, this signal booster amplifies cell phone signals from both exterior and interior antennas, ensuring reliable connectivity on the road. The product comes with a 12V cigarette lighter power adapter, external magnetic mount antenna with a 15-foot cable, wireless bi-directional amplifier, and internal patch antenna with a 15-foot cable, making it easy to set up and use in your car. The sleek black design and universal compatibility make it a convenient and versatile accessory for enhancing cell phone performance in your vehicle.