Introduced in 2011 by F. P. Journe, the Octa Sport line initially featured cases made of ultra-light aluminum. The inspiration for this collection stemmed from a significant collector and dedicated sports enthusiast who actively participated in marathon and triathlon competitions. F.P. Journe ventured into the realm of split-seconds complications for the first time during the Only Watch Charity Auction in November 2017. Several months afterward, an official production version of the watch was introduced as part of Journe's LineSport collection, available in titanium, pink gold, or like the present example, platinum cases. The movements employed in the platinum and pink gold variations adhered to Journe's conventional pink gold construction, while the movement in the titanium model utilized an unconventional material for watchmaking: aluminum.

Distinguished by its uncommon and captivating blue/purple dial featuring a central guilloché pattern, this timepiece exceptionally showcases Eastern Arabic numerals for the hours, the minute track (in intervals of 5), the small seconds, the 30-minute chronograph counter, and the oversized date. Most probably a custom order, it is believed that around 5 examples have been made in this configuration.

Inside the present LineSport split second chronograph beats the exceptional hound-wound caliber 1518, further visible in all its pride through the sapphire case back. An evolution of the movement Journe used in the initial Only Watch unique piece, the caliber 1518 could be viewed as an enhanced iteration of the previous caliber 1517. In 18K pink gold, the movement is exceptionally refined to Journe's standards featuring perlage on the baseplate, polished screw heads with chamfered slots, circular stripes on the bridges, and straight-graining on the few steel components.

Preserved in excellent overall condition and accompanied by its full set of accessories the present split-seconds chronograph is certainly one of the rarest timepieces from F.P. Journe.