TYMO Porta: Cordless styling, 50 million negative ions, 3200mAh rechargeable battery. MINI CORDLESS DESIGN, GRAB AND GO: Weighing only 234g, this straightening brush is designed for ease of use and portability. The cordless feature means you can use it anywhere without worrying about finding an outlet or dealing with a tangled cord. Its compact and lightweight design makes it easy to bring on the go, so you can always look your best.