주요기능

• Excellent excerciser to develop and shape your grip and forearm muscles to improve baseball, tennis, golf games and most sports. Burn fat and get rid of flabby arms.
• Performance Digital LCD counter displays various vital workout information, including historical top speed; Certified for entry into our Monthly Top Speed Contest.
• The feature that advanced battery-free digital speedometer and embedded LED light which comes from your hand .
• Impact Resistant structure with Military-grade plastic shell.
• Smart light design you can carry the exerciser to use anywhere anytime,it's great of convenience.