This is the summary of consumer reviews for Sportline S7 Slim Heart Rate Monitor. The BoolPool rating for this product is Good, with 3.40 stars, and the price range is $25.$40.

Sportline S7 Slim Heart Rate Monitor is an exercise tool that maximizes your workout statistics by reading your fat burning levels and the total calories burned. It is an ideal device for many users that do not prefer to wear the arm or chest band type heart monitors. This one-touch heart rate monitor features a patented one-touch interface that allows you to see how many calories you burn during a specific period. It also features a fat-burning zone locator, which tells you which zone is the best to exercise in. It includes a laser tuned stopwatch that records with 1/100th second accuracy. The Sportline S7 heart rate watch is also capable of displaying the current time and date, along with an adjustable daily alarm to aid in planning your fitness routine. It also features a stopwatch and count-down timer functions that give you the benefit of keeping track of personal speed records to improve as and when required.

Some reviewers have faced an irregularity in the readings when they work up a sweat during the workout and the monitor does not give heart rate data quickly or consistently. Some users have observed that they need to hold down button for a longer time to read the heart rate, sometimes it takes 5 seconds, sometimes takes longer and sometimes won't read at all.

Overall, the S7 heart rate monitor is a good multi-functional watch that lets you analyze the amount of calories you burn during a specific period. Additionally, its attractive slim design makes it a good daily wear watch while keeping track of your heart rate and giving you the data to improve your workouts.