Polar Hear Rate Monitor FT60M Black w White Display Male B P Parts Accessories output level ≤120±3dB Max OSPL90 Nerve Sensory Evaluator Access output level ≤120±3dB Max OSPL90 ≤120±3dB Average OSPL90 113±3 dB Max Gain 29±5dB FOG50 HFA Avg 5V Otoscope also has built in throat illuminator two in one instrument * Features halogen illumination and fiber optics for a cool light with no reflections or obstructions plus a rectangular viewing lens for instrumentation under magnification * 2 With the Polar Fitness Test you can measure your aerobic fitness by yourself automatically and without any exertion * Polar OwnCode© (5kHz) coded transmission * Coded heart rate transmission automatically locks in a code to transmit your heart rate to the training computer