Wireless bluetooth (4.2+EDR) ANC headphones. ANC stands for Active Noise Cancelling. These robust yet light-weight ANC headphones cancel disturbing ambient sounds to make the music sound even more clear and powerful, but are also ideal for optimal concentration. Especially useful in a busy office or while travelling. The headphones with oval ear cups have soft ear cushions that completely close off the ears, an adjustable headband, a control panel on the ear cup and a microphone function for answering phone calls. Range up to 10 meters. The powerful 3.7V Lithium battery is good for playing time of up to approx. 8 hours. ANC grade 18-20 DB. Comes with an attractive pouch. Includes Li-ion battery, micro-USB charging cable and user manual. Each item is individually boxed.