Manhattan 178709 Wireless Heaphones, Black Hands-free Profiles: A2DP, AVRCP, HS/HF Bluetooth Codec: AAC, APC Working Band: ISM 2.402 - 2.480 GHz Transmit Power: 4 dBm (Class 2) Over-ear design with plush, spacious ear cushions for maximum comfort Delivers high-quality wireless streaming from Bluetooth-enabled devices from up to 30' away Built-in, recessed microphone Lithium polymer battery provides up to 15 hours of playback time (400 hours standby) USB charging cable and 3.5mm stereo audio cable included Integrated on-ear controls allow you to easily adjust volume, play/skip tracks and answer calls Folds up for storage or travel (carrying case included)