CRDC S100 Bluetooth Speaker, Portable 5W Speaker with Lanyard Single Channel Back to School Present Olive Long play and talk time - 2600 mAh high capacity rechargeable lithium battery provides 10 hours of wireless playing It can be used as MP3 / MP4 player, also speakers of mobile phone, computer such digital equipment's Advanced technology, Bluetooth 4.0 realizes the rapid and matching connection with hfp, hsp, a2dp, avrcp Durable design - special case makes it waterproof ip65, dustproof, shockproof Hands-free portable