Description: 【Material】: Hand grip exerciser is made of silicone and pp, lightweight and sturdy structure, delicate and comfortable to the touch, the silicone grip ring can be freely disassembled, quickly cleaned with clean water, wipe dry and use 【Versatile】: Silicone Ring for Hand Training is also a Entertainment Video Remote Control Turner, easy wireless connection , you can scroll up and down when watching short videos, scroll left and right when reading e books, both entertainment and exercise. Suitable for all hand sizes and strength levels, this Hand Grip Strengthener from beginners to advanced athletes 【Advanced Counting Feature】: This Finger Exerciser equipped with a digital counter that tracks up to 999 repetitions, training times are clear at a glance, helping you view your progress effectively 【Versatile Training Tool】Ideal for grip training, thumb or single finger strength exercises, wrist flexibility workouts, and hand strength development, making it a comprehensive tool for various fitness routines 【Compact and Portable】: Grip Strength Training Tool is 8.3cmx7cmx2.3cm/3.27inchx2.76inchx0.91inch, with its lightweight and compact structure, this Finger Stretcher is easy to carry around, great for use at home, in the gym, or outdoors Specification: Counting digits: 0-999 Battery type: polymer battery Battery voltage: 3.7v Battery capacity: 40mah Force: about 20 pounds Key mode: physical key Charging voltage: 5v Charging current: 30ma Charging time: 1.5h Type C Port Battery life: 43min (with light on) Material: Silicone ABS Size Chart: 8.3cmx7cmx2.3cm/3.27inchx2.76inchx0.91inch  Package Includes: 1 Hand grip strengthener Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.