Spirit - Setting a New Standard. 400 Meter Range - Two-way BT intercom. Two riders at a range of 400 meters / 0.25 miles. Waterproof - No matter what you throw at it, your waterproof SPIRIT will take the beating and keep you connected. Rain, shine, mud, dust or snow. Over the Air Software Updates - Keeping your unit up-to-date has never been so easy. Use your Cardo Connect App to download and install latest software directly to your Spirit. No cables needed. Universal Connectivity - SPIRIT connects with any other Bluetooth headset of any brand. Connection is easy and painless. 32 mm HD Speakers - Thin 32 mm speakers and an advanced processor for an immersive sound. Automatic Volume - Automatically adjusts your sound volume based on the outside ambient noise.