Fangrui Product Details [higher Capacity] - Equipped With High Precision Strain Gauge Sensor, The Hand Dynamometer Gives You Accurate Momentary Digital Reading Of Gripping Power. Measuring Capacity: 396lbs/180kgs; Division:0.2lbs/0.1kgs This Is A Hand Dynamometer For Physical Therapists, Occupational Therapists, Athletic Trainers, Chiropractors, And General Practitioners. [sturdy And Long-lasting] - This Hand Dynamometer Is Made Of High Quality Materials, Which Makes It Sturdy And Long-lasting. If You Have Been Working On Improving Things With Some Pull Up Bars And Pulley Based Exercises, This Grip Gauge Is An Excellent Metric To Use For Determining Improvement. [efficient Device And Easy To Use] - The Display On The Handle Is Simple To Read, And The Design Of This Grip Strength Tester Is . The Length Of The Handles Can Be Adjusted To Accommodate Different Size Hands. This Grip Strength Trainer Meter Is So Much More Convenient Than The Old School Manual That Are Hard To Read And Uncomfortable To Use. Power Supply Mode: