Check the listing for details. Wall Punching Training Pad Boxing Digital Sandbags Boxing Strength Meter Tester. Color: Black, Condition: New. Listed at 41.83 USD. Description Boxing Is a Sport That Releases Repression, Allowing Both Children and Adults to Perform in a Controlled Manner. Wouldn't You like to Know How Your or Your Child's Strength Changes After a Daily Workout? I'm Sure You'll Love It When You Buy This Boxing Strength Tester Because It Helps Both Adults and Teens Develop Motor Skills and Coordination. and You Can Change Your Training Plan According to Your Strength and Get a Clearer Picture of What You Need to Achieve After Training! Specification Product Name: Boxing Strength Tester Model: Kz-01 Power Supply Method: Usb Charging Material: Pu, Polyurethane, Composite Panels Color: Black Style: Vertical Number of Sensors: 4 Product Size: 40*40*6.5cm/ 15.75*15.75*2.56in Net Weight: 3.5kg/ 7.72lbs.