Bike Mount system utilises U-Bops 4 prong ratcheting system to instantly attach to custom made sleeves for Smartphone, Mobile phones & PDA devices, or universal holders for conveniences. Attaches to the handlebar of any bicycle or mountain bike. Rotates through 360 degrees. Produced in a semi-hard rubberised plastic. The case clicks open to reveal an inner soft silicone layer shaped to exactly fit & hold the Iphone 4 in. place & protect it from knocks & bumps. Protects your device from one off knocks, drops & impact damage. The Home & power buttons can be accessed using sealed weatherproof buttons built into the outside of the case. Each button has a solid high response feel to it, exactly like pressing the actual button on your iphone. Volume buttons are not accessible but the case can be flipped open in seconds to access this feature. A clever fully clear weatherproof window built into the front of the case allows responsive access to the touchscreen on the iphone. As this window is sealed it ensures that the iphone inside stays protected from the elements. This protective screen is ultra clear & does not hinder the use of your iphone screen. Fits any device which is between 50 mm. & 80 mm. in width. Spring loaded & Fully Adjustable in width to fit almost any device.