"Crystal Digital u level wireless ergonomic Design, Flexible Neckband, Comfort Cable Eartips, 2 Mics for Clear Voice Calls, 12 mm Dynamic Speaker Unit for Deep and Powerful Sound, Long Battery Life, TTS Available through the Samsung Level App. Level U is an ideal choice for high quality music on the go. Ergonomically designed for long term wear, these headphones feature a flexible urethane joint to wear around your neck and stabilizing wing ear gels for in-ear comfort. The magnetic earbuds conveniently clasp together, reducing clutter when not in use. Large 12mm speaker and active, dual-mic noise reduction ensures quality sound and ease of wear. Bluetooth Wireless In-Ear Headphones is an easy task with the built-in USB port after you have had an extended session of chatting or musical entertainment. The rechargeable battery provides you 10 hours playtime, 11 hours talk-time and 500 hours standby so that you do not waste too much of your time and energy in keeping this device active.Ear Headphones delivers crystal-clear and crisp audio whether its your favourite track or a caller's voice. Pair the Wireless Headphones with up to two of your Bluetooth-compatible smartphones, tablets, MP3 players etc. and enjoy seamless switching to play one song after the other from your personalized music lists. When a phone call comes, the Talk button lets you quickly get to your caller and with the volume button you can also adjust the sound level in case the voice is too inaudible."