Serfas Level 2 15-Function Wired Ultra Slim Design Cycling Computer - Si-20 Hats One size fits all

One size fits all

Nylon Sole with carbon fibers

but in different words

Elite runners have long relied on technology to analyze performance

and tired feet

Serfas Level 2 15-Function Wired Ultra Slim Design Cycling Computer - Si-20 Hats One size fits allSerfas SI 20 computer has everything a bike rider needs & comes equipped with 14 usable functions that are easily programable. Features: Handlebar & Stem Mountable Large 1. 5 Inch Screen Auto Start Stop Kilometers or Miles 15 Functions: Current Speed Average Speed Max Speed Trip Distance Auto Trip Timer Speed Comparator Odometer Auto Scan Speed Tendency Temperature Programmable Repair Indicator Freeze Frame Memory Digital Clock Odometer Save