Randolph Engineering Concorde Gunmetal Sunglasses | Gray Skull Franco Swiss quartz movement

Swiss quartz movement

Unlike ordinary tritium watches that use T25 tritium illumination

Speed up or slow down to stay in your training zone

Weight 103 g (with standard strap)

Sends precise heart rate information to your compatible Suunto heart rate monitor in real time

Randolph Engineering Concorde Gunmetal Sunglasses | Gray Skull Franco Swiss quartz movementThe Randolph Engineering Concorde Sunglasses exemplify classic style re engineered. They have been hand crafted using military grade standards to sustain a lifetime of wear and tear. [Details] Made in USA using the finest components found worldwide. Lifetime warranted solder joints Adjustable silicon nose pads for customized fit Mineral crown glass lenses UV Protection Package includes a case, microfiber cleaning cloth, and small maintenance kit