With fitness tracking firm Fitbit having announced its collaboration with New York City-based designer Tory Burch earlier this year, to make wearable devices more stylish, Burch's accessory collection for the Fitbit Flex fitness tracker was launched on Wednesday.

The accessory collection launched by Burch brings a new designer approach to wearable fitness trackers. The collection comprises four distinctive pieces --- a brass pendant, a brass bracelet, and two silicone printed bands. The accessories are now available for preorder at the Fitbit and Tory Burch websites.

The Tory Burch for Fitbit brass pendant is priced at $175; while the brass hinged bracelet costs $195. The other two accessories in the Tory Burch's high-end accessory collection for Fitbit - the silicone printed bracelets - are priced at $38, and are available in two color options: pink and blue.

Each of the four accessories of the collection have been designed by Burch in such a way that they can house the $99-priced Fitbit Flex fitness tracker --- the rectangular sensor which is capable of tracking the number of steps taken by the wearer, and the calories burned by them. The device also monitors the wearers' sleeping patterns.

About the designer accessories collection for the Fitbit Flex fitness tracker, Burch said that the challenge was to design "versatile pieces that could house the tracking device and look chic enough for work or evening."