SoundBot SB556 Stereo Bluetooth 4.1 Sports Active Wireless Headset High-Performance Earbud Earphone w/ Voice Prompt, 180hrs of Standby time, 8hrs of Talk or Music Playback time, 33ft Wireless Range, NFC, aptX, Multi-Point Connectivity, Built-in Mic & Crystal Clear Sound Technology for Hands-Free Talking and Music Streaming Equipped with latest Bluetooth 4.1 technology that is universally backward compatible to all the Bluetooth enabled devices to offer HDacoustic sound, dynamic music listening experience, and eliminating call drops. Human engineering design with tilted ear tips, water resistant soft ear gel, and secure-fit silicon stabilizer for sports active users to increase mobility and comfort. Intuitive voice prompt technology, NFC pairing,&accessible built-in micand in-line control buttons for hands-free talking, volume adjustments, and music playback without hassles. Multi-point connectivity that can simultaneously connect to 2 devices at once for 8hrs of talk time or music playback time. Enhanced music experience withadvanced digital decodingdigital sound, noise/wind reduction technology, and unique ergonomic structure of ear tip design.