Yes, they are wireless. The in-line microphone lets you make and take calls hands-free.
Is the battery replaceable?
No, your battery is designed to last the life of the product. It should only be removed by a recycling facility. Any attempt to remove or replace your battery may damage the product and void your warranty.
How can I clean the headphones?
You can clean your headphones with a slightly damp cloth or with an anti-static cloth. • Do not clean any part of the product with thinners or other solvents and chemicals as this may cause permanent damage to the product which is not covered by the warranty. • Keep the headphones away from hot, humid areas or strong sunlight, and don't let them get wet.