Analog Sportswatch with Chest Strap The Mix Free is a chic and solid sports watch for fitness-oriented athletes. It presents the essential functions on its large display. This includes, in addition to the heart rate display (chest strap with transmitter is included), the display of the caloris burned and the total fat burned. An optical and acoustic alarm indicates when the heart rate limits are exceeded or fallen short of. The visual heart rate zone indicator provides additional information about the training units. In addition to the clock and an analog chest strap, the necessary batteries are also included.