2 OS and up /for iPhone 6
You can put on and adjust by yourself
Gold series connectors for increasing wireless performance
Material: Food grade stainless steel
Sensory Toy Finger Grip: Autism ADHD Anxiety Therapy/Stress Relief - Green for Ford 2 OS and up /forImprove finger strength for athletes (basketball, rock climbing enthusiasts, fitness, tennis, baseball, boxing, tennis, golf, and shooting) and musicians (guitar players, bass players, pianists, and violinists). Help prevent injuries and muscle imbalances from the overuse of "crushing" type hand and finger grip exercises. The strength trainer is ergonomically designed and fits well for all hand sizes, which perfect for men, women, seniors, and teens.