Shake Weight Pro Starts working instantly

Starts working instantly

Exterior knob with O-ring allows for manual pressure adjustments and/or pressure equalization

premium leather that barely needs any break-in

LR44/AG13 button alkaline batteries

Shake Weight Pro Starts working instantlyShake Weight Pro. The "smart" dumbbell just got smarter! Introducing the NEWEST funnest way to shake and tone your arms, shoulders and chest! It provides the same, fun effective workout as the original, but this time around, it has adjustable resistance to increase intensity with a mere twist of your hands. Your muscles will contract up to 240 times a minutes for fast results in just six minutes a day! Available in Men's and Women's sizes, it's the