PYLE PHBT35 Home Stereo Bluetooth Streaming Wireless Headphones Built-in Bluetooth technology you can stream audio directly from your Bluetooth enabled device with Noise-Canceling Stereo Sound Drivers Average Charging Time: Up to 6 hours Crystal clear wireless performance - Works with iPhone, Blackberry, Droid, iPads, Tablets, etc. - Talk Time: Up to 7 hours - Version 3.0 Bluetooth - Dimensions (unfolded): 7.6" (L) x 6.5" (W) x 2.7" (H) Standby time: Up to 180 hours - Listen to your favorite music from Bluetooth-enabled devices - Dimensions (folded): 7.6" (L) x 6.5" (W) x 1.5" (H)