Boxing Challenge is loads of fun, features punching speed competition, burning calories, and punching force competition withstanding up to 400 kg punching forces. There are 4 game modes to choose. Free Punch is used for daily punching practice and allows the tracking of key metrics via Bluetooth connection, including punch count, average power, duration, and calories burnt, etc. Punching power measures the impact force of punches. Punching speed measures how many punches the user could hit in 10, 20, and 30 seconds. The associated calories burnt are also recorded. Arena mode simulates real boxing competition for professionals, either in 1, 3 or 5 rounds.