is for tennis to lead the charge into this new era of powerful data-driven athletic insight. The revolution begins with Challenger, which provides instant data and audible cues while on the tennis court. Their future products include Challenger Lite and Flex. Lite will be smaller and less expensive than Challenger, without a screen, to appeal to recreational players. With Flex, their all purpose device, they will spread to new sports. Flex is versatile and will attach directly to you, your clothes, and your equipment. Using data from one or more of those devices, their app will create personalized lesson plans to drive and track your improvement.