Enhance your grip strength effectively with our Rechargeable Hand Grip Strengthener. This portable hand dynamometer is designed for both athletes and individuals undergoing rehabilitation. Its 40LB resistance level is perfect for varied training needs. Portable Design: Easily carry it with you to the gym, office, or while traveling. Rechargeable: Equipped with a long-lasting battery, ensuring your training is never interrupted. Versatile Use: Ideal for improving hand strength, endurance, dexterity, and muscular rehabilitation. Invest in your hand health and strength today with our efficient and reliable hand grip exerciser equipment. Color: B: black Material: Silicone Package Contents: 1 x grip strength trainer Only the above package content, other products are not included. Note: Light reflection 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.