Adjustable Resistance: With a range of 11-132 lbs (5-60kg), this grip strength trainer is perfect for beginners and advanced users alike.Versatile: Use it to strengthen your grip, forearms,...
Waterproof protection: Keep your phone safe and dry while swimming, boating, or enjoying any water activities.Universal compatibility: Fits all IOS phones and other smartphones up to 6 inches.Touchscreen...