The iBike Pro power meter uses a revolutionary approach to power measurement that is based on NewtonÂ??s third law: "For every action there is an equal and opposite reaction". Oversized handlebar mounted computer that takes into account all the opposing forces against a rider (friction, inclines, wind, aerodynamics, etc) iBike Pro uses four sensors: an accelerometer to measure hill slope and bike acceleration/deceleration forces, a differential pressure sensor to measure wind speed forces, an absolute pressure sensor to measure elevation gain, and a wheel pickup to measure bike speed (wired from the handlebars). No extra pieces outside of a speed sensor Includes software for both PC and Mac users

Polar CS600 Cycling Computer features information on your speed (current, average and max), distance, altitude and ascent/descent. Heart Rate features include OwnCode, OwnCal, average heart rate and maximum heart rate Cycling features include speed (current, average and max), distance, altitude, ascent/descent Power features include Cycling Efficiency Index, left/right balance and Pedaling Index(only on Power model) Data features include 99 exercise files with summaries and infrared data transfer Bar or Stem mount

The Polar CS400 Computer is a feature packed computer that tracks everything from your heart rate to your altitude. Heart Rate features include OwnCode, OwnCal, average heart rate and maximum heart rate Cycling features include speed (current, average and max), distance, altitude, ascent/descent & cadence Data features include 99 exercise files with summaries and infrared data transfer Bar or Stem mount

The Timex IronMan Bodylink Heart Rate, Speed + Distance with 3D GPS receiver allows you to monitor your heart rate, speed and distance. Includes digital heart rate sensor and 3D speed + distance sensor Includes bike mount OVA (optical viewing angle). Watch face sits on side of wrist for viewing

Power kit for CS-series heart rate monitors by Polar.

Timex's Bodylink is one of the few systems on the market designed to use GPS specifically for cycling/running applications. Since the speed and distance can be determined from the GPS position, there is no need for a magnet or other pickup on the fork or wheel. This version includes watch, speed + distance sensor, and heart rate strap includes bike mount digital heart rate monitor built in

The Digital Helmet Hero mounts to your helmet.  The Digital Hero 3 uses a wrist strap and was originally designed with surfing in mind.  All models are waterproof to 100 feet.The GoPro Digital Hero 3 is about to start a new revolution in cycling, allowing you to film your rides in one simple and easy to use package. This item has both the lens and recording device in one compact package! When you add a 2 Gb Secure Digital(SD) card you get a camera that can take up to 54 minutes of video complete with sound.Video from GoPro Digital Hero tests as posted on Youtube: Helmet Hero mounts: Strap mount Sticky mount(not pictured) 3 Megapixel optic sensor f2.8 glass lens 16mb internal memory, expandable to 2Gb Secure Digital(SD) card 640x480 Video resolution Up to 54 minutes of high quality video(with 2Gb Secure Digital(SD) card) 3X sequence photo burst Always on mode lasts 3+ hours Mode lock for easy shooting 10 second self timer USB or RCA connectors cables for PC or TV Powered by 2 AAA batteries(included) Compatible with Windows ME/2000/XP, MAC OS 9.1/10.2 and later Weight(Claimed): 4.5 oz  

The water resistant Polar S1 Footpod attaches to your shoe and measures both running speed and distance. Compatible with Polar RS200, RS200sd, RS400, RS400sd, S625X and S725X. Accurate in all weather conditions. Water resistant up to 2 meters. Easy one button activation. Stable and comfortable to wear.

Timex Ironman Target Trainer HRM is GPS and data recorder compatible. The Target Trainer allows for eight target heart rate zones, and 4 linked interval timers. GPS compatible 8-target heart rate zones (5-based on max heart rate, 3-custom) 4 linked interval timers 3 line display Water resistant to 50m Target Heart Rate Zone with Alarms Average in Zone Heart Rate Average Work-Out Heart Rate Selectable Large Digit HR Display Average HR Memory Each Lap/Split Maximum HR-Based Zone Calculation Recovery Rate Timer

The Sigma Sport BC2006 DTS Wireless functions include wireless speed, wireless heart rate, altimeter and temperature.

The Sigma Sport Computer Heart Rate is a wireless computer that keeps track of your speed and heart rate.

The all new Rebel line from NiteRider takes cycle computers in a newdirection. The large, easy to read display, along with simple, userfriendly buttons, make using the Rebel a breeze. The Rebels feature aback light – an industry first, an innovative mounting bracket allowsfor quick tool-free mounting to nearly any handlebar or stem. Digital wireless computer Current speed Maximum speed Average speed Total distance Trip distance Elapsed time 12/24 hr clock Smart back light Low battery indicator Temperature Actual to average speed comparison 2 Wheel settings Wireless cadence kit available as option Innovative tool free bracket easily mounts onto any handlebar or stem