Digitales Handkraftmessgerät – Handdynamometer, schwarz, elektronisch, mit USB-Ladekabel

【Dual Power Supply】This hand grip dynamometer features hand grip strength measurement and its brass construction ensures excellent visibility in the dark. It can be powered via an external USB cable or by overcharged AAA batteries (within their lifespan). 【Easy to Use】Simply turn on the digital hand grip dynamometer and press the "Start" button to begin measurement. Then, press the hand grip dynamometer with your maximum isometric contraction force for at least 5 seconds. The LCD screen will automatically display the test results, with the maximum grip strength value shown as "Weak," "Normal," or "Strong" in the grip strength status list. 【Applications】This digital hand grip dynamometer is suitable for sports training, physical activities, family activities, and clinical applications. It also makes a great Christmas or birthday gift for friends, colleagues, and elders who love sports.