Features: Versatile Training Tool This grip strength device provides two workout preferences, ideal for measuring power and regular exercises, suitable for fitness enthusiasts and student fitness assessments. Ergonomic & User Friendly Features a comfortable grip with textured factors for secure handling, making it excellent for home workouts and functional training activities. Sturdy ABS Construction Built with resilient ABS substance, this hand dynamometer retains its form during prolonged use, offering consistency for professional training and athletic monitoring. Progress Tracking Feature Automatically records results and enables comparison checks, helping users refine workout approaches and monitor recovery through clear data displays. Responsive Strength Analysis Equipped with sensitive transducer components for timely hand power readings, allowing athletes and gym users to properly track their development. Specifications: Substance:ABS Product size: as shown in the picture Net weight: 415 Product extent: 180kg/396lb Applicable scenarios: training, exercise, sports, school, home use. Applicable batteries: two batteries (not included) Battery capacity: LiFePO4 battery 300mah (inclusive) Package Includes: Electronic gripperx1 note: Pay attention to the storage methods.