I've been using the Epluse2 for 2 weeks now, about 8-10 workouts and I highly recommend it. It's comfortable, easy to read and most importantly accurate. I lift weights, use cardio machines and run on track and on concrete. It maintains accurate readouts at all times. The gym machines frequently fail and/or display highly inaccurate readings. I bought it for 1 primary reason; to help me maintain the highest heart rate in my cardio zone. I can also easily read it without my glasses. I've used 2 different machines so far, and there's no interference. The ouly downside is the battery. In full display mode, I have to recharge it after 3 workouts. This is approximately 3 hours. I only use it for cardio. I haven't used the lower usage setting because I don't want to have to push a button to get my HR. That defeats the purpose. Maybe they can improve the battery next time around
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