Product Models: The document outlines three models of Alvita pedometers: HJ-320, HJ-321, and HJ-325.
Common Features: All models include a clock, auto reset at midnight, step tracking, distance measurement, a tri-axis acceleration sensor, 7-day display memory, battery, and holder.
Model-Specific Features: - HJ-320: Basic model with essential features.
- HJ-321 (Optimized): Adds calorie burned and aerobic steps tracking.
- HJ-325 (Ultimate): Includes all features of HJ-321 plus steps per minute (pitch) tracking and comes with a strap and clip.
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