SoundBot SB273 Premium HD Stereo Bluetooth Wireless Headset Headphone for Music Streaming & Hands-Free Call Talking w/ 40mm Driver, 6Hrs Music Time, 8Hrs Talk Time, 125Hrs Standby Time, Built-in Mic DURABLE, LUXURIOUS & FLEXIBLE DESIGN: Durable and flexible headband design with adjustable hidden arm mechanism provides maximum comfort, mobility, and flexibility to fit any head size. INTUITIVE SMART CONTROL BUTTONS & 6HRs PLAYTIME: Navigation buttons to adjust volume, skip to the next or go back to previous available radio channel or songs flawlessly and seamlessly for most versatile use. Built-in high density battery for up to 6 hours of music playback time via wireless streaming, up to 8 hours of talk time and 125 hours of standby time from 33 feet away with free line of sight. TECHNOLOGICAL ADVANCED: Built-in universal compatible Bluetooth v3.0 supports Bluetooth A2DP, AVRCP, HS/HF profiles. Pairs with all A2DP-enabled devices including smartphones, tablets, iPhone, iPad, Samsung Galaxy, laptops, PC, digital media players, etc PREMIUM SPEAKER DRIVER: High performance 40mm premium driver with natural and balanced audio spectrum to deliver the dynamic music listening and hands-free talking experience. BUILT-IN MICROPHONE: Features built-in microphone for hands-free calling, AUX line-in port for wired connection, and MicroUSB charging port. (MicroUSB and AUX Cable included)