Coros Apex 4 42mm on run Full-length slotted carbon fiber plate:

Full-length slotted carbon fiber plate: Delivers smooth transitions and explosive propulsion with each stride

CHASSIS - activeCHASSIS™: A chassis for increased guidance

Perfect for easy runs

Swiss-engineered for performance

Effective self-massage for back

Coros Apex 4 42mm on run Full-length slotted carbon fiber plate:The Coros Apex 4 is engineered for mountain athletes who demand precision, durability, and elite performance in the harshest environments. Built with an alpine grade titanium bezel and scratch resistant sapphire glass, its designed to help you train harder, climb higher, and race further all while delivering ultra accurate GPS, fast mapping, advanced recovery data, and best in class battery life. From steep trail ascents to long ski tours and high