Drawing on half a century of Denon headphone engineering experience, the Denon AH-GC25W wireless headphones features AAC, aptX HD Bluetooth and advanced drivers that deliver immense Hi-Res certified sound. Dual microphones provide remarkable voice clarity when making and receiving phone calls. Long battery life of 30 hours with Auto Standby mode to save battery when not in use. The Clear Voice Capture feature provides echo cancellation and wind noise reduction to deliver the clearest vocal quality even in harsh, noisy surroundings. Ultra-comfortable, this lightweight, wireless and foldable over-ear headphones with a soft, adjustable headband is packed with advanced Denon technologies to deliver an amazing experience every day, and it fits neatly into the included carry pouch.