Nexersys Cross Body Trainer with Interactive Double End Bag for Boxing & MMA, Large, Matte Black Interactive double-end bag that delivers a full-body workout through high intensity interval training (hiit) delivered through our Cross body app on your android or Apple device Teaches and develops proper striking technique while effectively training cardio and core strength through beginner, intermediate and advanced difficulty levels Mobile app guides you through 10,000+ exhilarating and adaptive workouts that prompt and Track strikes and cardio moves, you will never get bored on this machine Wireless sensor in the Double end bag Syncs with the Cross body app and detects strikes and key performance metrics including accuracy, speed, power and strike combinations Includes a universal tablet/Smartphone holder, tablet not included