This jump rope has a digital counter, mile mode, kilo mode, and calories burned. Digital display can be switched with one button. Can be used outdoors or indoors, even when there is no space. 360° rotates for smooth movement 2-way specification that can be used with no cords or strings. Daily training and maintaining health Product Specifications: Grip part size: Approx. 7.1 x 1.2 inches (18 x 3 cm), Weight: Approx. 4.6 oz (130 g), Air bulb, Diameter: Approx. 1.2 inches (3 cm), Cord length: Approx. 9.1 ft (2.8 m), Battery: LR44 (with test battery).