Serfas Level 2 15-Function Wired Ultra Slim Design Cycling Computer - Si-20 Hats The clamp jaws are nominally

The clamp jaws are nominally 2

Elite runners have long relied on technology to analyze performance

WEIGHT: 253 grams (half pair size 9)

but in different words

One size fits all

Serfas Level 2 15-Function Wired Ultra Slim Design Cycling Computer - Si-20 Hats The clamp jaws are nominallySerfas 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