Top 10 fitness trackers ranked by price

No 2 Apple Watch

The world's second largest smartphone maker by shipment, Apple Inc announced its Apple Watch, at a media event on Sept 9.

The watch is equiped with a health tracker that can help to monitor users' heart beat, nutrition, body temperature and the sleeping quality.

It is expected to be on sale in 2015 and cost around $349.

Apple CEO Tim Cook introduces the new Apple Watch on Sept 9, 2014, in Cupertino, California, US. [Photo/IC]