Don't leave your fitness regime behind when on vacation. Step out with purpose in the company of your personal pedometer.
Garmin Forerunner 301 GPS personal training system (below left), #179.99 ($2,496), from www.sporttek.co.uk . The mother of all pedometers, this is more personal trainer than distance calculator, monitoring heartbeat, speed, distance, pace and calories burned, and comes with software to vary your workout. If you start slacking, an alarm bell rings. Compact, light and waterproof, with an easy-to-read display on an ergonomic wristband, it includes a GPS sensor so you will never get lost on Lantau again.
Timex T5E001 (below centre), #8, from www.sport-tool.com . Cheap but cheerful, this is what the experts call a good beginner's device, meaning it doesn't have many extra features. This gadget only counts your steps and calculates the distance covered. It clips onto your belt, and if you don't like it - and let's face it, it won't win any style awards - you've only spent a few dollars.
E7 Electric Six-Function (above right), #46.55, from www.pedo 
meters.co.uk. Made by perhaps the world's only firm specialising solely in pedometers, the waterproof E7 boasts a special spring to make it more reliable and accurate, and has a handy hinged waterproof LCD display so users can tilt the device up from the waistband without having to unclip it. As well as offering the usual calories burned, distance and time functions, it folds up so walkers don't accidentally reset it while pounding the pavement or treadmill.
Omron HJ-113 (below right), #34.99, from www.sport-tool.com . There's no duping anyone here: a sensor allows users to tell the difference between a healthy pace and a mere bump, so you can't sit at home watching The Simpsons while tapping it repeatedly to fool your personal trainer. It can discern walking, running and aerobic exercise, and provides fat- and calorie-burning measurements, so there are no excuses for not getting off the sofa.