Amazon has the Polar RC3 GPS Watch with Heart Rate Monitor on sale for $139.98 + FREE shipping!

Why this deal is hot:
Save 60% off -- that's $209.97 in savings!

What this does and why you need it:
This all-in-one GPS tracks your altitude, speed, distance and route with SiRFstar IV GPS technology. It has a rechargeable battery with 12 hours of continuous use (with the GPS on). Other features include analysis of training and feedback from the Smart Coaching Running index and Training Benefit features. It is also compatible with running and cycling sensors plus polarpersonaltrainer.com, a free training diary full of endurance training programs.