Customized logos/boxes/cable length/mic are welcomeCertification: CE/RoHSCondition: brand-new, unused, unopened and undamaged in its original packagingFit design: headbandEarpiece design: ear-cup (over the ear)Foldable, noise cancellation, playback controls, volume control, shocking low-sound quality gives you a live concert-like sound effectFM radio, TF card MP3 player, regular headset (via USB or audio cable)Connectivity: wired (using USB cable make it same as regular headset)FM function: can listen FM radioTF card slot: supports microSD memory card, use as memory to play MP3Data transmission function: can copy music to play MP3 (connected directly to a PC via a USBCable, when plug into microSD card (also name TF Card) as a U-disk directly copy songs)Battery: built-in rechargeable lithium battery