Portable hand dynamometer for grip strength testing and rehabilitation[Accurate measurement] The grip strength training device is equipped with a high-precision stress gauge sensor. Measuring capacity: 198 lb/90 kg; weight: 0.2 lb/0.1 kg. The compact grip training device can store up to 8 user files for easy tracking of progress.[Smart Counting and Resistance Adjustment] This grip training device adds a counting function, which can record up to 1999 exercises. Each time you use it, you can easily adjust the resistance of 11-190 pounds (about 5-89.8 kg) according to your needs to maximize your exercise needs.[Sports equipment and injury rehabilitation] The grip enhancer forearm grip is very suitable for improving the strength and speed of the wrist, and forearm. It is not only a good choice for rock climbers, tennis players, athletes and musicians, it enhances the flexibility of and wrists, but also very suitable for people who suffer from arthritis, tendinitis, carpal tunnel fractures and recovery from tendon surgery.[Easy to use and save data]-The grip strength trainer has a LCD screen, which clearly displays all measurement data on the same screen. The displayed size includes user code, age, gender, grip value (lbs or kilograms), and grip status. The maximum grip value is displayed and the weak, normal or strong levels can be saved and easily recalled for comparison.[Best Gift]-Grip Strength Enhancer-Very suitable for sports training, sports, family and clinical use. It is very suitable as a special gift/present for birthdays, New Year's Day, Valentine's Day, Mother's Day, Thanksgiving Day and Christmas.Colour: whiteMaterial: plasticPackage Contents:1 * Grip Strength Trainer1 * USB cableOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.