Usense Badminton Raquet Sensor for Badminton Racket Motion Detecting SWING SPEED: Record the speed and passion of every bat for you.Improve your skills starting from your speed. PLAYING CHARACTERISTICS: By analyze the percentages of smash , overhead and underarm when youre playing badminton. You could know more about your own habits and deviations easily. SMASH RANKING: Weve got the integral challenge every month. As the saying goes, it is much joyful to share than enjoy alone. Come on, challenge yourself and share your passion with your friends PERSONAL COACH: USENSE is always ready to winnow the equipment and push competition information for you. Whats more, video courses are suggested to be the personal technical guidance. WIRELESS CONNECTING: Connected to mobile phone after installment. Trace your movement locus timely , collect your batting stats dynamically.