When it's time to get in the ring, be sure you have the Amber Sports Boxing Interval Timer. Set rounds for two, three, or four minutes, with intervals of 15, 30, 35, or 60 seconds. This is great when training in order to prepare you for anything. Bell indicates round beginning or ending. Beeps at intervals. Manufacturer's warranty included - see Product Guarantee for complete details. About Amber Sporting Goods, Inc. Dedicated to bringing athletes and enthusiasts the best in training equipment for a variety of competitive sports, Amber Sporting Goods offers everything from boxing accessories to kickboxing equipment, from martial arts training products to soccer goods. No physical training stone is left unturned as Amber Sporting Goods strives to create the market's threshold for quality and innovation. From karate to boxing, Amber Sporting Goods has you covered.