Keep Adjustable Hand Grip Strengthener Ergonomic Dual-Function Finger Training Vitality Orange

3. Ultra-wide resistance range from 10 to 120 jin (approx. 5 to 60 kg)

4. Precise electronic counting with one-touch reset and long battery life supporting up to 100,000 counts

5. Ergonomic design with a 32mm handle diameter fitting natural finger curves and comfortable grip

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

High-strength 2.5mm diameter steel spring hidden inside to prevent rust and extend lifespan

Resistance adjustable with a visible window for easy monitoring

Supports both regular and reverse grip; reverse grip recommended for larger palms (middle finger to palm root length >18cm)

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

2. Clean with a damp cloth only; 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.