Vktech Multifunctional Heart Rate Tester Monitor Digital Calorie Counter Watch 008 (Silver) This watch is designed to calculate the calories bummed and pulse rate of a average individual bases on preset age, weight, and sex This is a not only a watch, but also a can calculate your heart rate and calories burned while exercising Test without the need of a chest strap Chronograph with split lap time Exercise counter with automatic and manual override calorie counter