Zepp Labs has raised $15 million in funding from GGV Capital, Bertelsmann, and Cherubic Ventures. Existing investor Legend Capital also participated in this round. The company has a sensor that can monitor swings and provide tips. The swings can come from a tennis racket, baseball bat, or golf club. Zepp Labs will be using the funding to hire additional talent. Based in Palo Alto, California, Zepp Labs’ sensors are distributed at Verizon and Apple retail stores along with their own website.