Double threat
ATS wireless or wired
The PURE 1/ATS bike computer is available in two versions.
The PURE 1 is a traditional wired bicycle computer.
The PURE 1 ATS is a coded wireless computer. ATS refers to SIGMA SPORT's own analog encoded wireless transmission system.


Flat handlebar mount
The new flat handlebar mount was designed specifically to match the thin profile of the PURE 1 ATS computer. The mount sits flush on the handlebar or stem, making the computer look like it is part of the bike itselt.
Click-magnet with ratchet fastener
The PURE 1 ATS introduces a new single piece spoke magnet that fits all common size spoke sizes and easily attaches without tools

Versatile mounting of the ATS transmitter
PURE 1 ATS records the speed using the analog transmission system (ATS) transmitter, which wirelessly transmits the data to the computer. The analog symbol is transmitted in encrypted format to eliminate cross talk, and has a transmission range of up to 70 centimeters. Attachment via cable ties, an O-ring or a strap is simple. The transmitter itself features a highly flexible rubber base, which fits on any fork.
User-friendly battery compartment cover
User changeable batteries is typical for SIGMA computers. The battery door opens with a simply twist of a coin. The battery inserts into the battery door itself, ensuring that it is always positioned correctly.
Simple wheel size setting
with Tire Selection
In order to have accurate speed and distance, you have to tell the PURE 1 ATS what size tires you have on your bike. The new TIRE SELECTION makes this easy. Simply select your tire size from the list of the most common sizes. For 100% accuracy, or if you can't find your tire size, you can still measure the circumference of your tire and manually enter this wheelsize.