Air-Buds are the hottest headphones on the market. Built-in high-quality audio chip, making you feel personally on the scene of music. No need to press any button to activate the wireless headphones, which can be automatically powered on and paired after taking them from the charging case. Meanwhile they can also be automatically powered off and charged after putting back into the charging case. Perfect for the gym, running and exercising. 1 3/4" L x 2 1/5" W