Specifications:

• Replaces up to 34 Dumbbells-with just the turn of a dial, you can automatically change your resistance from 10 lbs. all the way up to 90 lbs. of weight.
• Adjusts to your workout-adjust in 5 lbs. increases so you can gradually increase your strength.
• Space efficient
• Wider weight range-with weight that adjust up to 90lbs., you'll continue to see results as your fitness level improves.
• total body results-with the wider weight range you can do heavy exercises such as shrugs and lunges as well as lighter exercises such as curls and raises.
• quieter workouts