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【Adjustable Resistance】: Very high tech, but also simple in its operation. The resistance can be adjust by rotate the knob, simple and convenient. As you rotate upwards, the resistance strength will increase, and rotate downward, will reduce. The resistance strength of this arm exerciser is from 10 - 160 kgs. Adjust to the suitable resistance as needed to make exercise more effective and avoid muscle strain.
【Intelligent dual dial design】: Electronic measurement design of training intensity, Record and display training time, number of stretches, training frequency and work time, and convert your calorie consumption. Tension meter shows current spring strength realtime.