Keep Adjustable Hand Grip Strengthener Ergonomic Dual-Function Finger Training Dark Purple

Hidden spring design prevents rust and extends product lifespan compared to exposed spring designs

Finger strength training stroke up to 13mm for effective finger muscle development

Finger strength training mode activated by pressing four finger pressure points fully and toggling the finger lock switch ON; deactivated by the same procedure toggling OFF

Visual resistance adjustment window allows easy and precise resistance changes

Precise electronic counter with one-touch reset function; battery supports up to 100,000 counts for long-lasting use

Comfortable grip that does not pinch the hand, with a handle diameter of 32mm at the thumb base area

1. Inspect the grip trainer for severe wear or damage before each use; discontinue use if any issues are found.

2. Clean with a damp cloth; do not immerse in water to avoid spring rust.

3. Do not disassemble or modify the device except for battery replacement.

4. Keep out of reach of children.