The Polar AW200 activity watch contains innovative accelerometer technology -- motion sensor which measures your activities

Unique Features:
• Motion Sensor: Senses the impulses only if the body movement is constant and strong enough. (Must be walking for 10 sec before it starts.)
• Allows simple targeting of daily activity: Aim for 7,000 steps a day
• Records data during action to track activity efforts over time and monitor progress
• Activity Time: Allows you to compare active and total time to find out long you have been moving on a beneficial health intensity level.
• 5 Zones: (speed levels) shows level of effort to motivates the user to increase activity level for greater benefit
• Altimeter: Measures current altitude with graphical trend and provides more accurate caloric measurement
• Barometer: Measures current air pressure and temperature.

Key Specs:
• Model Number: Polar AW200
• Weight of Unit: 8.54 oz
• Time of Day : Yes
• Alarm: Yes
• Date Displayed: Yes
• Location of Transmitter: Wrist
• Location of Receiver: Wrist
• Transmitter Water Resistant: Up to 50 Meters
• Receiver Water Resistant: Up to 50 Meters
• Stainless Steel Case
• Mineral Glass Lens
• Firm Grip Buttons
• Changeable Battery