This is a diet device with a vibration function to support exercise. I have used it a few times. I am selling it because I no longer use it. - Brand: OTONA no NAWATOBI - Product Name: Diet Device - Function: 2-way adult vibration type - Accessories: Digital counter - Color: Black - Target: Adults - Purpose of use: Exercise - Features: With vibration function The texture and design make you want to touch it. The matte finish gives it a calm, mature impression. The gray logo adds a touch of elegance. The rounded body without corners feels good on the skin and fits comfortably in your hand, making you want to touch it every day. * Quietness that doesn't require a place or time. By attaching the air jump rope balls, you can exercise with the same load as regular jump rope exercise without the rope. Because the rope doesn't hit the floor, you can do jump rope exercises indoors at night without worrying about noise. * Highly efficient aerobic exercise. You can do jump rope exercises, which are extremely efficient among aerobic exercises, every day. Even busy working adults can feel the high exercise effect in a short amount of time. * Exercise feel with a digital counter. The main grip is equipped with a digital counter that automatically counts the estimated calories burned and the number of jumps. By managing aerobic exercise, which is difficult to understand the effect, with numerical values, you can get a sense of exercise. * Many thoughtful functions. A wire runs through the regular jump rope rope to prevent twisting and kinks. The rubber grip, designed with edge cuts for a non-slip grip, is Sports & Outdoors / Fitness & Training / Exercise Goods / Jump Ropes Thank you for viewing.