The HAC 4 Pro does not only convince with its heart rate-, altimeter-, and performance functions but it also includes many other functions which can be of great use for a wide range of athletes. Displaying factors such as calories consumed, number of ascents/descents or the daily and the optimum training area with CICLOInZone make using the HAC 4 Pro, a great experience. All data, which is stored in the watch, can easily be transferred, with a USB-Interface (optional), onto a computer where all values can be assessed and evaluated. This gives the athlete an overview of their present training level and so is easier for him/her to manage his/her training routines. The system of the Multi-Lock allows the computer to be placed not only on the handle bar but can also be adjusted on the bike frame.

Bike functions
  • Current/average/max speed
  • Auto Start/Stop
  • Daily, total kilometres(adjustable)
  • Daily/Total riding time
  • Time/distance comparison
  • Current/average/max performance in Watt
  • TwoInOne-System: separate data recording for 2 bikes


Heart rate functions:
  • Current, average, max heart rate
  • Lower/upper limit
  • HR-Limit starage
  • Recovery heart rate
  • Bargraph (colored)
  • Acoustic signal
  • Heart rate/Time manager
  • CicloInZone: Calculation of optimum training zone


Calorie functions:
  • Daily/total calorie consumption


Altimeter functions (barometric):
  • Current altitude
  • Home altitude
  • Daily/total altimeters cumulative upwards/downwards
  • Maximum daily altitude
  • Current/average/max ascent/descent speed
  • Current/average/max rise/descent in %
  • Number of ascents/descents per day


Sportwatch functions:
  • Time
  • Date
  • Stopwatch
  • 2 countdowns
  • Intermediate times
  • 100 lap times
  • Alarm


Further Functions:
  • Night-Light Display/Light manager
  • Current min/max temperature
  • Current/average/max speed for skiers/snowboarders
  • PowerDown-Mode: power saving mode
  • Battery warning


Recording functions:
  • Adjustbale recording intervalt (2, 5, 10, 20seconds)
  • Total recording time up to 120h (20s intervall)