KeySmart Extended Key Holder-Red Traditional which allows the XT20 head

which allows the XT20 head to be used as a powerful bike light (BK20)

Daily Mode (Default factory setting)

All the same bite-free protection as the Guardian

OLED display reports output

you can see and compare all of your ups and downs as it records your total and cumulative vertical ascents and descents

KeySmart Extended Key Holder-Red Traditional which allows the XT20 headDescription and Specifications: Extended frame for longer and foreign keys. Includes loop ring to attach car keys. Made with aircraft aluminum, stainless steel hardware, and has a laser engraved logo. USB takes up 2 slots. Loop piece takes up one slot. Protected under Patent D705,533, D754,428, D756,629, D756,630 & other Domestic and International Patents Pending FEATURES: Unique 'S' design allows you to hold between 2 100 keys (with expansion packs)