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MZ-1
A basic heart rate monitor designed for in-gym use only. Tracks heart rate, effort, and calories in real time and displays them on the gym’s leaderboard, but it does not have internal memory or Bluetooth for syncing workouts done outside the gym
MZ-3
A premium heart rate monitor with internal memory, Bluetooth, and ANT+ connectivity. Tracks your workouts both in and out of the gym, syncs with third-party apps and devices, and stores data for later upload—perfect for anyone training on the go.