Try our JRNY Mobile-Only Membership for 2 months, free (JRNY subscription auto renews annually at then-current annual rates, plus applicable taxes, unless canceled at least 48 hours before free period end) JRNY with Motion Tracking technology counts your reps and tracks your form in real-time simply by using your tablet’s camera. (JRNY membership required. Available on iOS and Android tablets only.) Get Motion Tracking, trainer-led workouts and so much more with a JRNY Mobile-Only Membership Adjusts from 5 - 52.5 lbs Replaces 15 sets of weights Weight selection dial 5, 7.5, 10, 12.5, 15, 17.5, 20, 22.5, 25, 30, 35, 40, 45, 50, and 52.5 lb.