The Aktiia Bracelet has 3 main parts:

The bracelet part containing the sensor (pod) is made of polycarbonate and glass fiber.

The metallic parts on the Aktiia bracelet are made of stainless steel. It's important to note that stainless steel may contain traces of nickel, which could potentially cause an allergic reaction in individuals with nickel sensitivities.

The strap is crafted from medical-grade silicone. This material is known for its durability, comfort, and hypoallergenic properties.