Amani Bluetooth Headphone ASP BT-6320 produces richer bass stereo sound with reinforced clarity. Noise Isolation feature enables clear Communication and Seamless Music. Extremely lightweight, these earphones are comfortable even for long wearing time. Soft and folding material enables you to easily pack them to carry around. Rechargeable battery provides up to 6 hours of talk/music time with less than 2 hours of charging time. Also this product uses advanced wireless Bluetooth technology V4.0 to ensure signal stability, the farthest connection is up to 10 meter. Compatible with almost all Bluetooth enabled devices.