The SIAC (SI Air+ touchless timing chip) is the newest and fastest timing chip available. See below for details of the touchless system. Upgrade to a 25 cm timing chip strap to allow it to be worn around the wrist for ski orienteering. Add a wrist safety strap as extra protection to prevent accidental loss during an event.
Replacement / spare strap for all SPORTident finger stick timing chips. The regular length straps is for normal use on a finger. The long strap is for use around a wrist - typically for ski-O and especially with a SIAC touchless timing chip for ski orienteering.
SPORident has created a great timing kit for Enduro races. There are three options - one each for a 4 stage race, a 5 stage race, and a 6 stage race. These kits contain everything you need for world class competitive timing. Between the SIAC chips that the competitors carry with them and the BS11 control stations at the start and finish of each stage, competitors' times are recorded without needing to slow down at the finish line.