LEMFO HV-900 Wireless Sports Stereo Bluetooth Headset Neckband in-Ear Earbuds Earphone Headphone (Black) 10 hour music / talk time (about 10 hrs w/ ANC turned on) Ergonomic design for quick, easy access to music and call controls. Voice Actions with compatible phone. Around-the-neck wearing style with body-contoured fit Enhanced bass response, HD Voice and aptX features Bluetooth version 4.0 with A2DP