The Sigma Pure 1 ATS is a purist amongst all bicycle computers. In one easy to read display, it answers the three most important cycling questions: How fast? How far? How long? And it does so in a very compact and attractive design. The Pure 1 ATS is a coded wireless computer. ATS refers to Sigma's own analog encoded wireless transmission system. Incredibly legible – the Pure 1 has a very large 29 x 45mm display that facilitates reading for everyone; especially those with less than perfect vision. Switch between the trip view and the totals view with just one touch of the button. This sleek design sets new standards when it comes to blending in with the bike. The flat handlebar mount was designed specifically to match the thin profile of the PURE 1 ATS computer, sitting flush on the handlebar or stem, making the computer look like it is part of the bike itself. Includes a single piece spoke magnet that fits all common size spoke sizes and easily attaches without tools