Product size :125*75*59MM Playback time: Maximum volume >3H/ Minimum volume >6H Bluetooth version :BT 5.0 Battery :3.7V 400mAh Charging voltage: DC 5V 1A Charging time :3 hours Support realistic functions: Bluetooth /U disk /TF card/audio output Package content: Speaker x1 instruction manual x1 TYPE-C audio cable x1 Speaker TypeSubwoofer Connectivity TechnologyBluetooth, Auxiliary, USB 1. Let's Go Back To the Old Days - This vintage speaker has retro and elegant appearance. It uses square design and blends modern technology with retro classic aesthetics, combining the latest and best digital audio tech with a 1950s retro vibe. With the advanced Bluetooth 5.0 technology, this retro bluetooth speaker could connect with your smart equipment in less than one second. 2. Develop Your Own Fashion Style - The specially designed retro bluetooth speaker differentiates you from common music lovers with its unique vintage appearance. This retrobluetooth speaker nostalgic appearance which makes you feel the romance of the old days while listening the music. 3. Multifunctional Bluetooth Speaker - Support Bluetooth playback, insert memory card playback, USB playback and AUX audio playback, this vintage speaker as a distinctive choice for both leisure and formal occasions! You can use it anytime anywhere. 4. Loud Volume - With 5-watt speakers processing audio output, this retro speaker amazingly richer and louder without any distortion. The compact retro bluetooth speaker only takes a space of 125*75*59mm with a 400mAh built-in rechargeable battery, up to 6 hours play time. 5. Small and Portable - The leather handle design is durable and easy to carry outdoors. Take outside and listen to speaker and music during cooking, party, yard work, garage, campfire, hiking, biking or beach, whatever you need it to do.