TEDxPhoenix 2010 Jany Deng – Arizona Lost Boys Center Sennheiser Adidas CX 680i Sports Headset $69.99 Go ahead. Play as hard as you want. The Sennheiser/adidas CX 680i Sports headset will never slow you down. Whether you’re on a treadmill, a jogger, a weight machine, or in a game, these earphones block out the ambient [...]