The Outdoor Tech Los Cabos Headphones provide crisp sound, wireless freedom, and durability. These lightweight headphones have a slim shape and tri folding ability that keeps them under the radar in the office, on the subway, and in the gym. And with their built in microphone and external controls, you get hands free calling and easy adjusting.The headphones resist water with the IPX4 technology, so you have the opportunity to listen to your music during your sweaty workouts and weekend boating trips. With 30mm drivers, they deliver a full range of clear sound, which is transmitted wirelessly through Bluetooth. You're able to listen to your tunes for up to 10 hours before needing to use the micro USB charge port to recharge the lithium ion battery.