CRDC Life Bluetooth Speakers Wireless Portable Rechargeable 2500mAh Battery Play For 10 Hour Single Channel 5W Sport Speaker Waterproof IP66 Dustproof Shockproof Music Phone Speaker Outdoors Long Play & Talk Time - 2500mAh high capacity rechargeable lithium battery provides 10 hours of wireless playing. AUX Function - Through the 3.5mm audio input line it can be used as MP3 / MP4 player, also speakers of mobile phone, computer such digital equipments. Advanced Technology - Bluetooth 4.0 realizes the rapid and matching connection with HFP, HSP, A2DP, AVRCP, APTX. Connect it to your PC, smart phone, table from up to 33 feet away. Durable Design - Special case makes it waterproof IP66, dustproof, shockproof. We warrant this device for 18 MONTHS from date of the original purchase for manufacturer defects. Portable Hands Free - Built in high-sensitivity microphone to support hands-free phone calls when you are in bathroom, moving or sports. Magnetic full-frequency speaker design, bass full, vigorous, suitable for popular music.