Meet the SCOSCHE RHYTHM 24: another armband heart rate monitor with waterproof construction that monitors your workouts as you push your body heard. It works with Bluetooth and ANT+ devices, including smartwatches, tablets, and smartphones.
The RHYTHM 24 has a 24-hour battery, five changeable training zones, and on-board recording. It captures HRV and other data points and works for swimming, running, and cycling. You can catch it at CES.