Why choose the Midland BTR1 Advanced Twin℃ The Midland BTR1 Advanced is a Bluetooth communication system with a great price/performance. This system is equipped with a technology that allows communication between 4 people up to a distance of 1200 meter in Conference mode. The BTR1 Advanced is Made in Italy and shares the design and control ergonomics with the top-of-the-range Rush RCF model. It also has Digital Noise Killer, high-definition sound by RCF and a long lasting battery, as Midland promises a weekend duration of operation, so you should be able to ride all weekend without charging.  This communication system is compatible with other brands, all types of smartphones, navigators and TFT systems of the main motorcycle companies.  What's in the box℃ * 2 BTR1 Advanced Devices * 2 audio systems with two 40mm HD sound RCF stereo speakers * 4 ear cushions * 4 shims * 2 wired and 2 rigid anti-turbulence boom mics.  * 2 magnetic fixing systems to the helmet: